George Bennett
George Bennett - California Water Science Center
Science and Products
Filter Total Items: 53
Trihalomethanes formed from natural organic matter isolates: Using isotopic and compositional data to help understand sources Trihalomethanes formed from natural organic matter isolates: Using isotopic and compositional data to help understand sources
Over 20 million people drink water from the Sacramento-San Joaquin Delta despite problematic levels of natural organic matter (NOM) and bromide in Delta water, which can form trihalomethanes (THMs) during the treatment process. It is widely believed that NOM released from Delta peat islands is a substantial contributor to the pool of THM precursors present in Delta waters. Dissolved NOM...
Authors
Brian A. Bergamaschi, Miranda S. Fram, Roger Fujii, George R. Aiken, Carol Kendall, Steven R. Silva
Carbon isotopic constraints on the contribution of plant material to the natural precursors of trihalomethanes Carbon isotopic constraints on the contribution of plant material to the natural precursors of trihalomethanes
The δ13C values of individual trihalomethanes (THM) formed on reaction of chlorine with dissolved organic carbon (DOC) leached from maize (corn; Zea maize L.) and Scirpus acutus(an aquatic bulrush), and with DOC extracted from agricultural drainage waters were determined using purge and trap introduction into a gas chromatograph-combustion-isotope ratio monitoring mass spectrometer. We...
Authors
B.A. Bergamaschi, M.S. Fram, C. Kendall, S. R. Silva, G. R. Aiken, R. Fujii
Determination of pesticides associated with suspended sediments in the San Joaquin River, California, USA, using gas chromatography-ion trap mass spectrometry Determination of pesticides associated with suspended sediments in the San Joaquin River, California, USA, using gas chromatography-ion trap mass spectrometry
An analytical method useful for the quantification of a range of pesticides and pesticide degradation products associated with suspended sediments was developed by testing a variety of extraction and cleanup schemes. The final extraction and cleanup methods chosen for use are suitable for the quantification of the listed pesticides using gas chromatography-ion trap mass spectrometry and...
Authors
B.A. Bergamaschi, D.S. Baston, K.L. Crepeau, K.M. Kuivila
The effect of grain size and surface area on organic matter, lignin and carbohydrate concentration, and molecular compositions in Peru Margin sediments The effect of grain size and surface area on organic matter, lignin and carbohydrate concentration, and molecular compositions in Peru Margin sediments
A C-rich sediment sample from the Peru Margin was sorted into nine hydrodynamically-determined grain size fractions to explore the effect of grain size distribution and sediment surface area on organic matter content and composition. The neutral monomeric carbohydrate composition, lignin oxidation product yields, total organic carbon, and total nitrogen contents were determined...
Authors
B.A. Bergamaschi, E. Tsamakis, R.G. Keil, T.I. Eglinton, D.B. Montlucon, J. I. Hedges
A one-pot procedure for the quantitative conversion of glycosides into acetylated glycosyl fluorides A one-pot procedure for the quantitative conversion of glycosides into acetylated glycosyl fluorides
[No abstract available]
Authors
B.A. Bergamaschi, J. I. Hedges
Science and Products
Filter Total Items: 53
Trihalomethanes formed from natural organic matter isolates: Using isotopic and compositional data to help understand sources Trihalomethanes formed from natural organic matter isolates: Using isotopic and compositional data to help understand sources
Over 20 million people drink water from the Sacramento-San Joaquin Delta despite problematic levels of natural organic matter (NOM) and bromide in Delta water, which can form trihalomethanes (THMs) during the treatment process. It is widely believed that NOM released from Delta peat islands is a substantial contributor to the pool of THM precursors present in Delta waters. Dissolved NOM...
Authors
Brian A. Bergamaschi, Miranda S. Fram, Roger Fujii, George R. Aiken, Carol Kendall, Steven R. Silva
Carbon isotopic constraints on the contribution of plant material to the natural precursors of trihalomethanes Carbon isotopic constraints on the contribution of plant material to the natural precursors of trihalomethanes
The δ13C values of individual trihalomethanes (THM) formed on reaction of chlorine with dissolved organic carbon (DOC) leached from maize (corn; Zea maize L.) and Scirpus acutus(an aquatic bulrush), and with DOC extracted from agricultural drainage waters were determined using purge and trap introduction into a gas chromatograph-combustion-isotope ratio monitoring mass spectrometer. We...
Authors
B.A. Bergamaschi, M.S. Fram, C. Kendall, S. R. Silva, G. R. Aiken, R. Fujii
Determination of pesticides associated with suspended sediments in the San Joaquin River, California, USA, using gas chromatography-ion trap mass spectrometry Determination of pesticides associated with suspended sediments in the San Joaquin River, California, USA, using gas chromatography-ion trap mass spectrometry
An analytical method useful for the quantification of a range of pesticides and pesticide degradation products associated with suspended sediments was developed by testing a variety of extraction and cleanup schemes. The final extraction and cleanup methods chosen for use are suitable for the quantification of the listed pesticides using gas chromatography-ion trap mass spectrometry and...
Authors
B.A. Bergamaschi, D.S. Baston, K.L. Crepeau, K.M. Kuivila
The effect of grain size and surface area on organic matter, lignin and carbohydrate concentration, and molecular compositions in Peru Margin sediments The effect of grain size and surface area on organic matter, lignin and carbohydrate concentration, and molecular compositions in Peru Margin sediments
A C-rich sediment sample from the Peru Margin was sorted into nine hydrodynamically-determined grain size fractions to explore the effect of grain size distribution and sediment surface area on organic matter content and composition. The neutral monomeric carbohydrate composition, lignin oxidation product yields, total organic carbon, and total nitrogen contents were determined...
Authors
B.A. Bergamaschi, E. Tsamakis, R.G. Keil, T.I. Eglinton, D.B. Montlucon, J. I. Hedges
A one-pot procedure for the quantitative conversion of glycosides into acetylated glycosyl fluorides A one-pot procedure for the quantitative conversion of glycosides into acetylated glycosyl fluorides
[No abstract available]
Authors
B.A. Bergamaschi, J. I. Hedges