Arthur J Horowitz

Biography

EDUCATION:

University of London, London, U.K., 1971-1974, Geology, PhD

Imperial College of Science and Technology, London. U.K., 1971-1974, Applied Geochemistry, DIC

University of Miami, Miami, FL, 1967-1971, Marine Geology, MS

Queens College, CUNY, Queens, NY, 1963-1967, Chemistry/ Geology, BA

 

PROFESSIONAL SOCIETIES

Geological Society of America (1980 - present)

American Geophysical Union (1976 - present)

ASTM (American Society for testing and Materials) (1979 - present)

International Association of Geochemistry and Cosmochemistry (1987- present)

International Association of Hydrological Sciences [(IAHS); (1992 – present)]

Vice President of the International Commission on Continental Erosion (ICCE) of the IAHS (2003 – present)

 

PROFESSIONAL EXPERIENCE:  

Chief, Sediment Partitioning Research Project, Research Chemist (GS-15), Georgia Water Science Center, Atlanta, GA (1997-Present) – Typically, we work on a variety of water quality projects to evaluate the impact of sediment-inorganic chemistry. Environmental settings have included large and small rivers, mining areas, and urban centers. We also provide water quality project support for USGS offices in the form of analytical support and/or project planning/design. 

Chief, Sediment Partitioning Research Project, Research Chemist (GS-15), Georgia Water Science Center, Atlanta, GA (1997-Present) - Currently, we are engaged in a number of projects. Since 2002 I have been responsible for all the sediment and sediment-associated chemical work for the City of Atlanta Water Quality Monitoring Program. This entails routine and event sampling; all the sediment-associated analyt­ical work is performed in my lab. From 1997 through 2007, I was responsible for the separation, trace element analyses, data reduction, and data interpretation of all suspended and bed sediment samples col­lected for the NASQAN program. Since 2006, I have been evaluating/interpreting all the bed sediment-associated trace/ major element, nutrient, and carbon data generated during the first cycle of the NAWQA Program and tying it to land use, underlying rock type, and population density. Since 2005 I have worked in collaboration with various academic and national organizations in Brazil under the US/Brazil Common Agenda on the Environment. This work entails training and collaborative studies associated with sediment sampling and subsequent chemical analyses. This work is being done in association with the Federal University of Rio Grande do Sul (Porto Allegre). CPRM (the Brazilian USGS), ANA (National Water Agency), and ANEEL (Brazilian National Energy Agency). Prior to this, dating from 1997 through 2006, we had a long-term working relationship with the University of Paris VI for a variety of collaborative sediment chemical studies in the Seine River Basin. From 2004 through 2006 we maintained a working relationship with the Flanders Hydraulics Institute in Antwerp, for sediment chemical studies in Belgium. Since 1997 under the auspices of the Office of Water Quality, I have carried out, and on request, continue to evaluate equipment and/or analytical methodology used throughout the WRD in both the co-op as well as National programs. These have included evaluations of whole-water splitting devices, and methods for the determination of sediment-associated carbon, phosphorus, and nitrogen. We also analyzed all the sediment samples collected by WRD, and subsequently carried out the data interpretations, to evaluate the impacts of Hurricanes Katrina and Rita on Lake Ponchartrain.

Chief, Sediment Partitioning Research Project, Research Chemist (GS-14), Georgia District Office, Atlanta, GA (1989-1997) - I was responsible for a variety of projects in­cluding geochemical investigations of Lake Coeur d'Alene, the floodplains of the Couer d'Alene River, and Terrace Reservoir, development of a 'clean' protocol for use by operational personnel for the collection and processing of water samples for subsequent trace element analyses, the effects of membrane filtration on dissolved trace element concentrations, and an evaluation of short-term spatial and temporal variability in suspended sediment and associated trace elements, and an evaluation of sample splitters. 

Chief, Sediment Partitioning Research Project, Research Chemist (GS-13), Georgia District Office, Atlanta, GA (1985-1989) - I was responsible for a variety of projects including geochemical investigations of mining-related impacts on Whitewood Creek, the Belle Fourche, and Cheyenne Rivers, and the Cheyenne River Arm of Lake Oahe, SD; under the Toxics Program, an evaluation of dewatering devices for suspended sediment for subsequent chemical analyses. 

Chief, Sediment Partitioning Research Project, Research Chemist (GS-12), Georgia District Office, Atlanta, GA (1983-1985) - This period covered the beginning of the sediment partitioning project and entailed establishing a laboratory and developing a series of procedures for the analysis of trace elements in a variety of solid-phase matrices as well as a detailed study of the significance of a variety of physical and chemical factors which influence/control sediment-trace element chemistry. 

Chief, Automated Wet-Chemistry Section, Supervisory Chemist (GS-12), National Water Quality Laboratory, Doraville, GA, (1978-1983) – I was responsible for the auto­mated wet chemistry section which dealt with the production-line analyses of filtered water, whole-water, and bed sediment samples for a variety of inorganic constituents as well as the development of new analytical techniques for use with these sample matrices.

Member, Environmental Studies Section, Oceanographer (GS-12), New York Outer Continental Shelf Office, BLM, New York, NY (1976-1978) - Served as a Contracting Officer's Representative for developing and monitoring the performance of both govern­ment and non-government contractors tasked with establishing baseline environmental levels at potential offshore oil and gas leasing sites. The work also included planning baseline studies, preparing RFP's, evaluating proposals, and contributing to various sections of environmental impact statements.

Assistant Professor, Dept. of Earth and Environmental Sciences, Queens College, CUNY (1975-1976) - Taught a variety of environmental courses to undergraduate stu­dents and was responsible for the department's analytical facilities.  

 

 

 

 

 

Publications:

Horowitz, A. J., 1970, The distribution of Pb, Ag, Sn, Tl, and Zn in sediments on active oceanic ridges. Marine Geology, 9, 241-259.

Bostrom, K., Blankenburg, J., and Horowitz, A. J., 1971, Substitution in the systems (Ba, Pb)(S04,CrO4) and (Ba,Sr)(SO4,CrO4) at 400oC, 400 bars and Ba[SO4(BF4)2] at 100oC 1 Bar. Geol. For. Forh., 93, 729-741.  (Developed about 50% of the analytical results and interpretation)

Bostrom, K. and Horowitz, A. J., 1972, Origin of pH variations and inorganic carbonates in pelagic sediments. Geol For. Forh., 94, 515-535.  (Developed all analytical results and helped write the paper)

Tooms, J., Holmes, R., and Horowitz, A. J., 1973, Confirmation of Ostapoff's fourth brinehole, Red Sea. Nature Physical Science, 241, 161-162.  (Worked on the analyses and wrote the paper)

Bostrom, K., Joensuu, O., Moore, C., Bostrom, B., Dalziel, M., and Horowitz, A. J., 1973, Geochemistry of Ba in pelagic sediments. Lithos, 6, 159-174. (Developed some of the analytical data)

Bignell, R., Tooms, J., Horowitz, A. J., and Cronan, D., 1974, An additional location of metalliferous sediments in the Red Sea. Nature, 248, 127-128. (Worked on the analytical results and interpretation)

Horowitz, A. J., 1974, The geochemistry of sediments from the northern Reykjanes ridge and the Iceland-Faroes ridge. Marine Geology, 17, 103-122.

Horowitz, A. J. and Cronan, D., 1976, The geochemistry of basal deep sea drilling project sediments from the north Atlantic. Marine Geology, 20, 205-228.

Horowitz, A. J., 1974, Geochemical investigations of sediments associated with the mid-Atlantic ridge:  PhD Dissertation, University of London, 247p..

Presley, B., Horowitz, A. J., and Parker, S., 1976, Trace metals project: Environmental Assessment of the South Texas O.C.S.:  Chemical and Biological Survey Component - A Report to the B.L.M. in Fulfillment of Contract 08550- CTS-17, 531-591.  (Developed 2/3 of analytical data and worked on the interpretation)

Horowitz, A. J. and Presley, B., 1977, Trace metal concentrations and partitioning in zooplankton, neuston, and benthos from the south Texas outer continental shelf. Archives of Environmental Contamination and Toxicology, 5, 241-255.

Horowitz, A. J., 1984, Major element analysis of rocks and sediments by atomic absorption spectroscopy. Varian Instruments at Work, AA-42, 5p. (Published simultaneously as U.S.G.S. Open-File Report 84-607).

Horowitz, A. J., and Elrick, K. A., 1985, Multielement analysis of rocks and sediments by wet digestion and atomic absorption spectroscopy. Varian Instruments at Work, AA-47, 7p. (Published simultaneously as U.S.G.S. Open-File Report 85-78).

Horowitz, A. J., 1985, A primer on trace metal-sediment chemistry, U.S. Geological Survey Water Supply Paper 2277, 67p.

Horowitz, A. J., 1985, Colorimetry. In Methods for determination of inorganic substances in water and fluvial sediments (ed. Fishman, M. J., and Friedman, L. C.), U.S.G.S. Open-File Report 85-495, 52 - 57.

Horowitz, A. J., 1986, Comparison of methods for the concentration of suspended sediment in river water for subsequent chemical analysis. Environmental Science and Technology, 20, 155 - 160.

Horowitz, A. J., and Elrick, K. A., 1986, An evaluation of air elutriation for particle size separation and subsequent chemical analysis. Environmental Technology Letters, 7, 17 - 26.

Elrick, K. A., and Horowitz, A. J., 1986, Analysis of rocks and sediments for As, Sb, and Se by wet digestion, atomic absorption spectroscopy, and hydride generation. Varian Instruments at Work, AA-56, 5p. (Published simultaneously as U.S.G.S. Open-File Report 85-497). (Provided guidance during the method's development stage and helped write the paper).

Horowitz, A. J., 1986, Trace metal analysis of rocks and sediments by graphite furnace atomic absorption spectroscopy. Varian Instruments at Work, AA-64, 8p. (Published simultaneously as U.S.G.S. Open-File Report 86-305).

Horowitz, A. J., and Elrick, K. A., 1987, The relation of stream sediment surface area, grain size, and composition to trace element chemistry. Applied Geochemistry, 2, 437 - 451.

Horowitz, A. J., and Elrick, K. A., 1987, Sediment-trace element chemistry: interrelations with surface area, grain size, and geochemical substrate. In (eds. S. Lindberg and T. Hutchinson), Proceedings of Heavy Metals in the Environment New Orleans, Sept. 15 - 18, 1987, vol. 2, p. 227 - 229.

Elrick, K. A., and Horowitz, A. J., 1987, Analysis of rocks and sediments for mercury, by wet digestion and flameless cold vapor atomic absorption. Varian Instruments at Work, AA-72, 5p. (Published simultaneously as U.S.G.S. Open-File Report 86-596). (Provided guidance during the work and helped write the paper).

Horowitz, A. J., and Elrick, K. A., 1987, Arsenic geochemistry of sediment cores from the Cheyenne River arm of Lake Oahe, South Dakota - 1985 results. In: (ed. Mallard, G), U. S. Geological Survey Toxic Substances Hydrology Program--Surface Water Contamination: Proceedings of technical meeting, Denver, Colorado, February 2-4, 1987: U.S. Geological Survey Open-File Report 87-764, p. 39 - 40.

Goddard, K. E., Horowitz, A. J., and Shearer, C. K., 1987, Distribution of solid-phase arsenic and trace elements in bottom and suspended sediments, Whitewood Creek and the Belle Fourche and Cheyenne Rivers, western South Dakota. In: (ed. Mallard, G.), U.S. Geological Survey Toxic Substances Hydrology Program--Surface Water Contamination: Proceedings of technical meeting, Denver, Colorado, February 2-4, 1987: U.S. Geological Survey Open-File Report 87-764, p. 13-17. (Provided analytical and interpretive support).

Horowitz, A. J., 1987, Book Review of Sediments and Water Interactions by P. G. Sly. Journal of Sedimentary Petrology, 57, 4, 806.

Horowitz, A. J., Elrick, K. A., and Callender, E., 1988, The effect of mining on the sediment-trace element geochemistry of cores from the Cheyenne River arm of Lake Oahe, South Dakota, U.S.A. Chemical Geology, 67, 17 - 33.

Horowitz, A. J., 1988, An examination of methods for the concentration of suspended sediment for direct metal analysis. In: (eds. Lichtenberg, J., Winter, J. Weber, C., Fradkin, L.), Chemical and Biological Characterization of Municipal Sludges, Sediments, Dredge Spoils, and Drilling Muds, American Society for Testing and Materials, STP 976, 102 - 113.

Horowitz, A. J., and Elrick, K. A., 1988, Interpretation of bed sediment trace metal data: methods for dealing with the grain size effect. In: (eds. Lichtenberg, J., Winter, J. Weber, C., Fradkin, L.), Chemical and Biological Characterization of Municipal Sludges, Sediments, Dredge Spoils, and Drilling Muds, American Society for Testing and Materials, STP 976, 114 - 128.

Bradford, W.L. and Horowitz, A.J., 1988, The Role of Sediments in the Chemistry of Aquatic Systems - Proceedings of the Sediment Chemistry Workshop, February 8-12, 1982. U.S.G.S. Circular 969, 75p. (Helped organize the workshop and did about half the editing). 

Horowitz, A.J., 1988, A review of physical and chemical partitioning of inorganic constituents in sediments. In: (eds. Bradford, W.L. and Horowitz, A.J.) The Role of Sediments in the Chemistry of Aquatic Systems - Proceedings of the Sediment Chemistry Workshop, February 8-12, 1982. U.S.G.S. Circular 969, 7 - 22.

Goddard, K.E., Horowitz, A.J., and Elrick, K.E., 1988, Trace-element geochemistry of bottom sediment samples collected from Whitewood Creek and the Belle Fourche and Cheyenne Rivers. In: (ed. Goddard, K.E.), U.S. Geological Survey Applied Research Studies of the Cheyenne River System, South Dakota: Description and Collation of Data, Water Years 1985-86 U.S.G.S. Open-File Report 88-484, 37 - 43.  (Supervised the analytical work and wrote part of the paper).

Horowitz, A.J., Elrick, K.E., and Callender, Edward, 1988, Trace-element geochemistry of sediment cores collected from the Cheyenne River Arm of Lake Oahe. In: (ed. Goddard, K.E.), U.S. Geological Survey Applied Research Studies of the Cheyenne River System, South Dakota: Description and Collation of Data, Water Years 1985-86 U.S.G.S. Open-File Report 88-484, 44 - 48.

Horowitz, A. J., Elrick, K. A., and Hooper, R. C., 1989, A comparison of instrumental dewatering methods for the separation and concentration of suspended sediment for subsequent trace element analysis. Hydrological Processes, 3, 163 - 184.

Horowitz, A. J., Elrick, K. A., and Cook, R. B., 1989, Source and transport of arsenic in the Whitewood Creek-Belle Fourche-Cheyenne River-Lake Oahe System, South Dakota. In: (eds. Mallard, G., and Ragone, S.), U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Phoenix, Arizona, Sept. 26-30, 1988  U.S.G.S. Water Resources Investigation Report 88-4220, 223 - 233.

Horowitz, A. J., Elrick, K. A., and Hooper, R. P., 1989, The prediction of aquatic sediment-associated trace element concentrations using selected geochemical factors. Hydrological Processes, 3, 347 - 364.

Horowitz, A. J., Elrick, K. A., and Hooper, R. C., 1989, A comparison of instrumental dewatering methods for the separation and concentration of suspended sediments. In: (eds. Mallard, G., and Ragone, S.), U.S. Geolgical Survey Toxic Substances Hydrology Program-- Proceedings of the Technical Meeting, Phoenix, Arizona, Sept. 26-30, 1988, U.S.G.S. Water Resources Investigation Report 88-4220, 485 - 493.

Fuhrer, G. J. and Horowitz, A. J., 1989, Vertical distribution of selected trace metals and organic compounds in sediments of the proposed lower Columbia River export channel, Oregon. U.S.G.S. W.R.I. 88-4099, 42 p.  (Provided all the trace element analysis and wrote about half the paper).

Horowitz, A. J., Rinella, F. A., Lamothe, P., Miller, T. L., Edwards, T. K., Roche, R. L., and Rickert, D. A., 1989, Cross-sectional variability in suspended sediment and associated trace element concentrations in selected rivers in the U.S. In: (eds. Hadley, R. F., and Ongley, E. D.), Sediment and the Environment, IAHS Publication 184, 57 - 66.

Horowitz, A. J., Elrick, K. A., and Hooper, R. P., 1989, The prediction of aquatic sediment-associated trace element concentrations using readily obtainable geochemical factors. In: (ed. J-P Vernet), Proceedings of the 7th International Conference on Heavy Metals in the Environment, Geneva, 1989, 493 - 496.

Horowitz, A. J., Rinella, F. A., Lamothe, P., Miller, T. L., Edwards, T. K., Roche, R. L., and Rickert, D. A., 1990, Variations in suspended sediment and associated trace element concentrations in selected riverine cross sections. Environmental Science and Technology, 24, 1313 - 1320. 

Horowitz, A. J., Elrick, K. A., and Cook, R. B., 1990, Arsenopyrite and the source and transport of arsenic in the Whitewood Creek - Belle Fourche - Cheyenne River - Lake Oahe System, South Dakota. The Science of the Total Environment, 97/98, 219 - 233. 

Horowitz, A. J., 1991a, The role of sediment-trace element chemistry in water quality monitoring and the need for standard analytical methods. In: (eds. Hall, J. and Glysson, G.), Monitoring Water in the 1990's: Meeting New Challenges, ASTM STP 1102 American Society for Testing and Materials, Philadelphia, 301 - 314. 

Horowitz, A. J., 1991b, A Primer on Sediment-Trace Element Chemistry, 2nd Edition. Lewis Publishers.Inc., Chelsea MI, 136 p. 

Horowitz, A. J. Elrick, K. A., Demas, C. R., and Demcheck, D. K., 1991, The use of sediment-trace element geochemical models for the identification of local fluvial baseline concentrations. In: (eds. Peters, N., Walling, D.), Sediment and Stream Water Quality in a Changing Environment: Trends and Explanation, Proceedings of the IAHS Symposium, Vienna, Austria, 1991, IAHS Publication 203, 339 - 348.

Horowitz, A.J., Elrick, K.A., and Colberg, M. R., 1992, The effect of membrane filtration artifacts on dissolved trace element concentrations. Water Research, 26. 753 - 763. 

Horowitz, A.J., Elrick, K.A., von Guerard, P.B., Young, N.O., Buell, G.R., and Miller, T.L., 1992, The use of automatically collected point samples to estimate suspended sediment and associated trace element concentrations for determining annual mass transport. In: (eds. Bogen, J. Walling, D. Day, T.), Erosion and Sediment Transport Monitoring Programmes in River Basins, Proceedings of the IAHS symposium, Oslo, Norway, 1992, IAHS Publication No. 210, 209 - 218. 

Horowitz, A.J., Elrick, K.A., and Cook, R.B., 1993, The effects of mining and related activities on the trace element geochemistry of Lake Couer d'Alene, Idaho, USA. In: (eds. Allan, R., Nriagu, J.) Proceedings of the Ninth International Conference on Heavy Metals in the Environment, Toronto, September 12-17, 1993, v. 2, p. 317 - 320. 

Horowitz, A.J., Elrick, K.A., and Cook, R.B., 1993, The effect of mining and related activities on the sediment-trace element geochemistry of Lake Coeur d'Alene, Idaho, U.S.A. - Part I: Surface Sediments. Hydrological Processes, 7, 403 - 423. (published originally as U.S. Geological Survey Open-File Report 92-109).

Horowitz, A.J., Demas, C.R., Fitzgerald, K.K., Miller, T.L., and Rickert, D.A., 1994, U.S. Geological Survey protocol for the collection and processing of surface-water samples for the subsequent determination of inorganic constituents in filtered water, U.S. Geological Survey Open-File Report 94-539, 57 p. 

Horowitz, A.J., Elrick, K.A., Robbins, J.A., and Cook, R.B., 1995, Effect of mining and related activities on the sediment-trace element geochemistry of Lake Coeur d'Alene, Idaho, U.S.A. - Part II: Subsurface Sediments. Hydrological Processes, 9, 35 - 54.  (published originally as U.S. Geological Survey Open-File Report 93-656).

Horowitz, A.J., Elrick, K.A., Robbins, J.A., and Cook, R.B., 1995, A summary of the effects of mining and related activities on the sediment-trace element geochemistry of Lake Coeur d'Alene, Idaho, U.S.A. Journal of Geochemical Exploration, 52, 135-144.

Horowitz, A.J., 1995, Scale as a factor in designing sampling programs for determination of annual trace element fluxes. In: (ed. Osterkamp, W.) Effects of Scale on Interpretation and Management of Sediments and Water Quality, Proceedings of the IAHS symposium, Boulder, Colorado, 1995, IAHS Publication No. 226, 293 - 301.

Horowitz, A.J., 1995, The use of suspended sediment and associated trace elements in water quality studies, IAHS Special Publication No. 4, IAHS Press, Wallingford, Oxfordshire, U.K., 58 p. 

Horowitz, A.J., Lum, K.R., Garbarino, J.R., Hall, G.E.M., Lemieux, C., and Demas, C.R., 1995, The effect of membrane filtration on dissolved trace element concentrations. In: Proceedings of the 1995 International Clean Water Conference, November 28-30, 1995; EPRI, 17 p. 

Horowitz, A.J., Elrick, K.A., Robbins, J.A., and Cook, R.B., 1995, Effect of mining and related activities on the sediment-trace element geochemistry of Lake Coeur d'Alene, Idaho, U.S.A. - Part II: subsurface sediments. Hydrological Processes, 10th Anniversary Issue, December, 1995, 81-100 [published originally in Hydrological Processes, 9, (1), 35-54].

Fitzgerald, K.K., Miller, T.L., Horowitz, A.J., Demas, C.R., and Rickert, D.A., 1995, U.S. Geological Survey protocol for measuring low levels of inorganic constituents, including trace elements, in surface-water samples. In: (ed. Morgan, J.) Sampling Environmental Media, ASTM STP 1282, American Society for Testing and Materials, Philadelphia, PA, 329 - 342. (I developed the protocol with Charles Demas and produced the original open-file report). 

Horowitz, A.J., 1996, Spatial and temporal variations in suspended sediment and associated trace elements — requirements for sampling, data interpretation, and the determination of annual mass transport. In (ed. Kausch, H. and Michaelis, W.), Advances in Limnology, 47, Suspended Particulate Matter in Rivers and Estuaries, Proceedings of an International Symposium, E. Schweizerbart'sche Verlagsbuch­handlung, Stuttgart, 515 - 536. 

Horowitz, A.J., Robbins, J.A., Elrick, K.A., Cook, R.B., 1996, Bed sediment-trace element geochemistry of Terrace Reservoir, near Summitville, southwestern, Colorado. U.S. Geological Survey Open-File Report 96-344, Atlanta, GA, 41 pp.

Horowitz, A.J., Lum, K.R., Garbarino, J.R., Hall, G.E.M., Lemieux, C., and Demas, C.R., 1996, Problems associated with using filtration to define dissolved trace element concentrations in natural water samples. Environmental Science and Technology, 30, 954-963. 

Hall, G.E.M., Bonham-Carter, G.F., Horowitz, A.J., Lum, K., Lemieux, C, Quemerais, B., and Garbarino, J.R., 1996, The effect of using different 0.45-µm filter membranes on 'dissolved' element concentrations in natural waters. Applied Geochemistry, 11, 243-249.  (Helped design the study and evaluated the data, reviewed the final manuscript)

Horowitz, A.J., Lum, K.R., Garbarino, J.R., Hall, G.E.M., Lemieux, C., and Demas, C.R., 1996, The effect of membrane filtration on dissolved trace element concentrations. Journal of Water, Air, and Soil Pollution, 90, 281-294. 

Horowitz, A.J., Robbins, J.R., Elrick, K.A., and Cook, R.B, 1996, Bed sediment-trace element geochemistry of Terrace Reservoir, near Summitville, southwestern Colorado. U.S.G.S. Open-File Report 96-344, Atlanta, GA, 41p

Horowitz, A.J., Lum, K.R., Garbarino, J.R., Hall, G.E.M., Lemieux, C., and Demas, C.R., 1996, Response to comments on "Problems Associated with Using Filtration to Define Dissolved Trace Element Concentrations in Natural Water Samples". Environmental Science and Technology, 30, 3398 - 3400. 

Horowitz, A.J., 1997, On the Problems Associated with Various Sample Media Used to Monitor Trace Element Fluxes. Monitoring Tailor-made II. In: (eds. Ottens, J., Claessen, F., Stoks, P., Timmerman, J. and Ward, R.), Proceedings of the Institute for Inland Water Management and Waste Water Treatment RIZA, Lelystadt, The Netherlands, 297 - 309.

Horowitz, A.J., 1997b, Some Thoughts on Problems Associated with Various Sampling Media Used for Environmental Monitoring. Analyst, 122, 1193-1200. 

Horowitz, A.J., Elrick, K.A., and Cook, R.B., 1999, Comment on "Phase Associations and Mobilization of Iron and Trace Elements in Coeur d'Alene Lake, Idaho. Environmental Science and Technology, 33, 201-202. 

Horowitz, A.J., Meybeck, M. Idlafkih, and Biger, E., 1999, Variations in Trace Element Geochemistry in the Seine River Basin Based on Floodplain Deposits and Bed Sedi­ments. Hydrological Processes, 13, 1329-1340.

Horowitz, A.J., 2000, NASQAN: The Design and Implementation of a Large-River Sus­pended Sediment and Trace Element Flux Programme. In: (ed. Stone, M.), The Role of Erosion and Sediment Transport in Nutrient and Contaminant Transfer, IAHS Publication 263, IAHS Press, Wallingford, U.K., 1 - 18. 

Grosbois, C., Horowitz, A.J., Smith, J.J., and Elrick, 2000, Effect of Mining and Related Activities on the Sediment Trace Element Geochemistry of the Spokane River Basin, Washington, USA. In: (ed. Nriagu, J.), 11th Annual International Conference on Heavy Metals in the Environment Contribution #1143, University of Michigan, School of Public Health, Ann Arbor, MI (CD-ROM).  (Collected the samples, directed the research, and helped write the paper). 

Grosbois, C., Horowitz, A.J., Smith, J.J., and Elrick, 2001, The Effect of Mining and Related Activities on the Sediment-Trace Element Geochemistry of Lake Coeur d’Alene, Idaho, USA. Part III. Downstream Effects: The Spokane River Basin. Hydrological Processes, 15, 855 – 875. 

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2001, The Revised NASQAN Program: Monitoring Fluxes on a National Scale. In: (ed. Warwick, J.), Proceedings of the AWRA Spring Specialty Conference San Antonio, Texas, American Water Resources Association, 83 – 88. 

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2001, Estimating Suspended Sediment and Trace Element Fluxes in Large River Basins: Methodological Considerations as Applied to the NASQAN Program. Hydrological Processes, 15, 1107 – 1132.

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2001, Annual Suspended Sediment and Trace Element Fluxes in the Mississippi, Columbia, Colorado, and Rio Grande Drainage Basins. Hydrological Processes, 15, 1169 – 1207.

Horowitz, A.J., Smith, J.J., and Elrick, K.A., 2001, Selected Laboratory Evaluations of the Whole-Water Sample-Splitting Capabilities of a Prototype Fourteen-Liter Teflon® Churn Splitter. U.S. Geological Survey Open-File Report 01-386, Atlanta, GA, 12 p. 

Swarzenski, P.W. Kvenvolden, K.A., Horowitz, A.J. and ten Brink, M. (2001) Integrated Strategy Urged to Address Coastal Contamination Issues.  EOS, 82: 500

Grosbois, C., Horowitz, A.J., Smith, J.J., and Elrick, 2002, The Effect of Mining and Related Activities on the Sediment Trace Element Geochemistry of the Spokane River Basin, Washington, USA. Geochemistry Exploration Environment Analysis, 2, 131 - 142. 

Grosbois, C., Meybeck,M. and Horowitz, A.J., 2002, Changes in Sediment-Associated Trace Element Concentrations in the Seine River Basin (1994-2001). Geochimica et Cosmochimica Acta, 66, 293 -

Meybeck, M., Horowitz, A.J., Grosbois, C., and Gueguen, Y., 2003, Changes in Sediment-Associated Trace Element Concentrations in the Seine River Basin (1994-2001). Journal de Physique IV, Proceedings of the XIIth International Conference on Heavy Metals in the Environment, Volume II, 871 – 874. 

Horowitz, A.J., 2003, An Evaluation of Rating Curves for Estimating Suspended Sediment Concentrations for Subsequent Flux Calculations. Hydrological Processes, 17, 3387 – 3409. 

Meybeck, M., Horowitz, A.J., and Grosbois, 2004, The Geochemistry of Seine River Basin Particulate Matter: Distribution of an Integrated Metal Pollution Index. The Science of the Total Environment, 328, 219 – 236. 

Horowitz, A. J., 2004, Monitoring Suspended Sediment and Associated Trace Element and Nutrient Fluxes in Large River Basins in the United States. In: (ed. Golosov, V., Belyaev, V., and Walling, D.), Sediment Transfer Through the Fluvial System, IAHS Publication 288, IAHS Press, Wallingford, 419 – 428. 

Horowitz, A.J., 2004, The Use of Sediment Rating Curves for Monitoring Suspended Sediment Concentrations and Fluxes: Issues of Temporal Resolution, Estimation Errors, and Sampling Frequency. In: (eds. Timmerman, J., Behrens, H., Bernardini, F., Daler, D., Ross, P., van Ruiten, K., Ward, R.) Proceedings of Monitoring Tailor-Made IV, St. Michielsgestel, The Netherlands , 339 – 346.

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2005, Some Initial Sediment-Associated Trace Element Results from the City of Atlanta, Water-Quality Monitoring Network. In: (ed. K.J. Hatcher), Proceedings of the 2005 Georgia Water Resources Conference, April 25 – 27, 2005 The University of Georgia, Athens, GA, CD-ROM, 6 p. 

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2005, Design, Implementation, and Initial Results from a Water-Quality Monitoring Network for Atlanta, Georgia, U.S.A. In: (eds. Savic, D.A., Bertoni, J.C., Marino, M.A., and Savanije, H.H.G.), Sustainable Water Management Solutions for Large Cities, IAHS Publication 293, 245 – 256. 

Owens, P.N., Batalla, R.J., Collins, A.J., Gomez, B., Hicks, D.M., Horowitz, A.J., Kondolf, G.M., Marden, M., Page, M.J., Peacock, D.H., Petticrew, E.L., Salomons, W., and Trustrum, N.A., 2005, Fine-Grained Sediment in River Systems: Environmental Significance and Management Issues. River Research and Applications, 21, 693 – 717. 

Walling, D.E. and Horowitz, A.J., 2005, Sediment Budgets 1, IAHS Publication 291, IAHS Press, Wallingford, U.K., 367 pp.

Horowitz, A.J. and Walling, D.E., 2005, Sediment Budgets 2, IAHS Publication 292, IAHS Press, Wallingford, U.K., 342 pp.

Grosbois, C., Meybeck,  M., Horowitz, .A.J., and Ficht, A., 2006, The Spatial and Temporal  Trends of Cd, Hg, Pb, and Zn in Seine River Floodplain Deposits (1994 – 2000). The Science of the Total Environment,  356, 22 – 37. 

Horowitz, A.J., 2006, The Effect of the “Great Flood of 1993” on Subsequent Suspended Sediment Concentrations and Fluxes in the Mississippi River Basin, USA. In: (eds. Rowan, J. S., Duck, R.W., and Werritty, Alan) Sediment Dynamics and the Hydromorphology of Fluvial Systems, IAHS Publication 306, 110 – 119.

Van Metre, P. C., Horowitz, A.J., Mahler, B.J., Foreman, W.T., Fuller, C.C., Burkhardt, M.R., Elrick, K.A., Furlong, E.T., Skrobialowski, S.C., Smith, J.J., Wilson, J.T., and Zaugg, S.D., 2006, Effects of Hurricanes Katrina and Rita on the Chemistry of Bottom Sediments in Lake Ponchartrain, Louisiana, U.S.A. Environmental Science and Technology, 40, 6894 – 6902.

Horowitz, A.J. and Hughes, W.B., 2006, The U.S. Geological Survey and City of Atlanta Water-Quality and Water-Quantity Monitoring Network. U.S. Geological Survey Fact Sheet 2005-3126, 4p.  

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2007. Results From the City of Atlanta Water-Quantity and Water-Quality Monitoring Program: Suspended Sediment, Trace Element, and Nutrient Fluxes, 2004–2005. In: (eds. Rasmussan, T., Carroll. G., and Georgakakos, A.) Proceedings of the 2007 Georgia Water Resources Conference, Athens, Georgia, March, 2007, CD-ROM, 10 p.

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2007. Measuring the Fluxes of Suspended Sediment, Trace Elements, and Nutrients for the City of Atlanta, U.S.A.: Insights on the Global Water Quality Impacts of Increasing Urbanization. In: (ed. Webb, B.W. and De Boer, D.) Proceedings of the IAHS Symposium on Water Quality and Sediment Behavior of the Future: Predictions for the 21st Century, IAHS Publication 314, 57 – 70. 

Van Metre, P.C., Horowitz, A.J., Mahler, B.J., Foreman, W.T., Fuller, C.T., Burkhardt, M.R., Elrick, K.A., Furlong, E.T., Skrobialowski, S.C., Smith, J.J., Wilson, J.T, Zaugg, S.D., 2007, Effects of Hurricanes Katrina and Rita on the Chemistry of Bottom Sediments in Lake Ponchartrain, LA. In Science and the Storms; the USGS Response to the Hurricanes of 2005, U.S. Geological Survey Circular 2007, 226 – 231.

Van Metre, P.C., Wilson, J.T., Horowitz, A.J., Skrobialowski, S.C., Foreman, W.T., Fuller, C.C., Burkhardt, M.R., Elrick, K.A., Mahler, B.J., Smith, J.J., and Zaugg, S.D., 2007, Chemical Constituents in Sediment in Lake Pontchartrain and in Street Mud and Canal Sediment in New Orleans, Louisiana, Following Hurricanes Katrina and Rita, 2005. U.S. Geological Survey Data Series 206, 159 p.

Horowitz, A.J., Elrick, K.A., and Smith, J.J., 2008. Monitoring Urban Impacts on Suspended Sediment, Trace Element, and Nutrient Fluxes Within the City of Atlanta, Georgia, U.S.A.: Program Design, Methodological Considerations, and Initial Results. Hydrological Processes , 22, 1473 – 1496.

Horowitz, A.J., 2008. Determining Annual Suspended Sediment and Sediment-Associated Trace Element and Nutrient Fluxes. The Science of the Total Environment, 400, 315 – 343.

Horowitz, A.J. and Stephens, V.C., 2008. The effects of Land Use on Fluvial Sediment Chemistry for the Conterminous U.S., Results from the First Cycle of the NAWQA Program: Trace and Major Elements, Phosphorus, Carbon, and Sulfur. The Science of the Total Environment, 400, 290 – 314.

Horowitz, A.J., 2008. Contaminated Sediments: Inorganic Constituents. In (ed. Anderson, M.G.) Encyclopedia of Hydrological Sciences, Wiley Interscience, published on-line athttp://mrw.interscience.wiley.com/emrw/9780470848944/ehs/article/hsa317/current/html, DOI: 10.1002/0470848944.hsa317, 27 pp.

Horowitz, A.J. and Stephens, V.C. 2008. The Effect of Increasing Urbanization and Population Density on the Concentrations of Sediment-Associated Constituents for the Conterminous U.S. In: (eds. Schmidt, J., Cochrane, T., Phillips, C., Elliott, S., Davies, T., and Basher, L.) Sediment Dynamics in Changing Environments, IAHS Publication 325, 591 - 598.

Horowitz, A.J. 2009, An Update on Sediment Studies Associated with the City of Atlanta Long-Term Monitoring Program, Proceedings of the Georgia Water Resources Conference. In: (ed. Carroll, G.D.) Proceedings of the 2009 Georgia Water Resources Conference, CD-ROM, 8 pp.

Horowitz, A.J. 2009, Monitoring Suspended Sediments and Associated Chemical Constituents in Urban Environments: Lessons From The City of Atlanta, Georgia, U.S.A. Water Quality Monitoring Program. Journal of Soils and Sediments, 9, 342-363. (DOI: 10.1007/s11368-009-0092-y)

Horowitz, A.J. 2010, A Quarter Century of Declining Suspended Sediment Fluxes in the Mississippi River and the Effect of the 1993 Flood. Hydrological Processes, 24, 13 - 34.

Banasik, K., Horowitz, A.J., Owens, P.N., Stone, M., and Walling, D.E. 2010, Sediment Dynamics for a Changing Future, IAHS Publication 337, IAHS Press, Wallingford, U.K., 376 pp.

Horowitz, A.J. 2010, The Use of Instrumentally Collected-Composite Samples to Estimate the Annual Fluxes of Suspended Sediment and Sediment-Associated Chemical Constituents. In: (eds. Banasik, K., Horowitz, A.J., Owens, P.N., Stone, M., and Walling, D.E.) Sediment Dynamics for a Changing Future, IAHS Publication 337, 273-281.

Zhang, Y., Collins, A.L., and Horowitz, A.J. 2010. Tracing Spatial Sources of Suspended Sediment in the Ohio River Basin, USA, Using Water Quality Data from the NASQAN Programme. In: (eds. Banasik, K., Horowitz, A.J., Owens, P.N., Stone, M., and Walling, D.E.) Sediment Dynamics for a Changing Future, IAHS Publication 337, 291-299.