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GeoHEALTH-USGS Newsletter

The GeoHEALTH–USGS Newsletter—published since 2004—provides information on USGS science activities pertinent to safeguarding the health of fish, wildlife, domesticated animals, and people from environmental exposures to contaminants and pathogens.

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Brown Bullhead from the Ashtabula River Illustrating the External Tumors Observed

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January 1, 1991

Evaluation of unsaturated zone air permeability through pneumatic tests Evaluation of unsaturated zone air permeability through pneumatic tests

Predicting the steady state distribution of air pressure in the unsaturated zone resulting from a pneumatic test provides a method for determining air-phase permeability. This technique is analogous to the inverse problem of well hydraulics; however, air flow is more complicated than ground water flow because of air compressibility, the Klinkenberg effect, variations in air density and...

Authors

Arthur L. Baehr, Marc F. Hult

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Upper Midwest Environmental Sciences Center, Upper Midwest Water Science Center

January 1, 1991

Effects of surfactants on the mobility of nonpolar organic contaminants in porous media Effects of surfactants on the mobility of nonpolar organic contaminants in porous media

No abstract available.

Authors

J. A. Smith, D. Tucker, P. R. Jaffe, R.T. Mueller

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

A thermodynamic partition model for binding of nonionic organic compounds by organic colloids and implications for their sorption to soils and sediment A thermodynamic partition model for binding of nonionic organic compounds by organic colloids and implications for their sorption to soils and sediment

No abstract available.

Authors

U.P. Chin, Walter J. Weber, C. T. Chiou

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Parameters involved in modeling movement of bacteria in groundwater Parameters involved in modeling movement of bacteria in groundwater

No abstract available.

Authors

Ronald W. Harvey

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Particulate and colloidal organic material in Pueblo Reservoir, Colorado--Influence of autochthonous source on chemical composition Particulate and colloidal organic material in Pueblo Reservoir, Colorado--Influence of autochthonous source on chemical composition

No abstract available.

Authors

J. F. Ranville, R.A. Harnish, D.M. McKnight

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Selected hydrologic data for the upper Arkansas River basin, Colorado, 1986-89 Selected hydrologic data for the upper Arkansas River basin, Colorado, 1986-89

No abstract available.

Authors

Gregory A. Wetherbee, Briant A. Kimball, Wendy S. Maura

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Partitioning of elements between two size sediment fractions in samples from nineteen areas of the Western United States Partitioning of elements between two size sediment fractions in samples from nineteen areas of the Western United States

No abstract available.

Authors

R. C. Severson, K. C. Stewart, Thelma F. Harms

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Geochemical investigation of an oil spill in San Francisco Bay, California Geochemical investigation of an oil spill in San Francisco Bay, California

No abstract available.

Authors

F. D. Hostettler, J. B. Rapp, K.A. Kvenvolden

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Water-extractable geochemical data for native and irrigated soils from the Kendrick Reclamation Project Area, Wyoming, 1988-89 Water-extractable geochemical data for native and irrigated soils from the Kendrick Reclamation Project Area, Wyoming, 1988-89

No abstract available.

Authors

J.G. Crock, R. C. Severson, James A. Erdman

Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Wyoming-Montana Water Science Center

January 1, 1991

User's manual for WATEQ4F, with revised thermodynamic data base and text cases for calculating speciation of major, trace, and redox elements in natural waters User's manual for WATEQ4F, with revised thermodynamic data base and text cases for calculating speciation of major, trace, and redox elements in natural waters

No abstract available.

Authors

J.W. Ball, D. Kirk Nordstrom

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Flame ionization mass spectrometry--Isotope ratio determinations for potassium Flame ionization mass spectrometry--Isotope ratio determinations for potassium

The air/acetylene flame provides a convenient ion source for the determination of potassium isotopic ratios by mass spectrometry. Unlike the argon inductively coupled plasma (ICP), the flame provides low background in the mass region of interest. Ion production is quite satisfactory for isotope ratio measurements at the micrograms per milliliter (μg/mL) level and slightly below, with 1...

Authors

Howard E. Taylor, John R. Garbarino, S. R. Koirtyohann

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program

January 1, 1991

Formation and transport of deethylatrazine in the soil and vadose zone Formation and transport of deethylatrazine in the soil and vadose zone

Atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) and two degradation products were monitored at seven depths in the soil and vadose zone throughout the growing season in two experimental plots in which corn (Zea mays L.) was grown. The soils in these plots were a Kimo silty clay loam (clayey over loamy, montmorillonitic, mesic, Fluvaquentic Hapludoll) and a Eudora silt loam...

Authors

C.D. Adams, E.M. Thurman

Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program