A5018183107- Heavy metals in environment
- Water Quality and Pollution Assessment
- Mercury impact and mitigation studies
- Radioactive contamination and transfer
- Groundwater and Isotope Geochemistry
- Radioactivity and Radon Measurements
- Geochemistry and Elemental Analysis
- Aquatic Ecosystems and Phytoplankton Dynamics
- Wastewater Treatment and Nitrogen Removal
- Marine and coastal ecosystems
- Geology and Paleoclimatology Research
- Soil and Water Nutrient Dynamics
- Mine drainage and remediation techniques
- Groundwater flow and contamination studies
- Phosphorus and nutrient management
- Environmental Toxicology and Ecotoxicology
- Geochemistry and Geologic Mapping
- Coastal wetland ecosystem dynamics
- Constructed Wetlands for Wastewater Treatment
- Hydrology and Watershed Management Studies
- Radioactive element chemistry and processing
- Photonic Crystals and Applications
- Aeolian processes and effects
- Electrochemical Analysis and Applications
- Toxic Organic Pollutants Impact
Yale University
2010-2023
Massachusetts Institute of Technology
1987-2007
Stony Brook University
2003
University of Delaware
1999
College of Marin
1999
Texas A&M University
1994
Texas A&M University at Galveston
1990-1993
Woods Hole Oceanographic Institution
1985
The particle concentration effect (p.c.e.) is an unexpected decline in partition coefficients (Kd) as suspended particulate matter (SPM) increases. This anomaly has been attributed to a variety of causes, but most often the existence colloidal forms adsorbate, which are included, error, dissolved fraction when calculating Kd. To test this hypothesis we have directly measured colloidal, macroparticulate, and truly metals (Cd, Cu, Pb, Zn, Fe, Al, Mn, Ag) monthly for one year (6/96–7/97) four...
Ultraclean methods were used to produce reliable concentration data for the trace metals Pb, Ag, and Cd in fresh waters Ph, Cu, Zn estuarine waters. Partitioning of between filter-retained filtrate fractions exhibited a dependence on total suspended solids (TSS) concentration. This phenomenon, particle effect (PCE), has been previously documented almost exclusively marine systems lab simulations, mainly radionuclides. The partition coefficient, Kd, was independent major ion chemistry pH,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTClean Technique Measurement Of Pb, Ag, and Cd in Freshwater: A Redefinition of Metal PollutionGaboury. BenoitCite this: Environ. Sci. Technol. 1994, 28, 11, 1987–1991Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https://doi.org/10.1021/es00060a033RIGHTS & PERMISSIONSArticle Views294Altmetric-Citations73LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full...
Abstract: The spatial scale and location of land whose development has the strongest influence on aquatic ecosystems must be known to support use decisions that protect water resources in urbanizing watersheds. We explored impacts urbanization streams West River watershed, New Haven, Connecticut, identify watershed imperviousness was most strongly related chemistry, macroinvertebrates, physical habitat. A multiparameter quality index used characterize regional urban nonpoint source pollution...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolonium-210 and lead-210 remobilization from lake sediments in relation to iron manganese cyclingGaboury Benoit Harold F. HemondCite this: Environ. Sci. Technol. 1990, 24, 8, 1224–1234Publication Date (Print):August 1, 1990Publication History Published online1 May 2002Published inissue 1 August 1990https://pubs.acs.org/doi/10.1021/es00078a010https://doi.org/10.1021/es00078a010research-articleACS PublicationsRequest reuse permissionsArticle...
Nearly a century of road salt use in the snowbelt region North America has led to substantial increases salinity levels freshwater habitats (1, 2). Salt pollution lakes and rivers is well characterized (3, 4). Lacking are broad insights for seasonal ponds. As critical many endemic species, these small often poorly flushed surface waters especially vulnerable accumulating high salts other pollutants. Here, we measured 165 ponds, characterizing patterns across space, through time, over depth...
High concentrations of Pb are found in surface soils even remote ecosystems as a result atmospheric deposition. This study conducted at the Hubbard Brook Experimental Forest provides key information on speciation soil solutions measured by ultrafiltration and ion-exchange techniques. About 50% total filtrate (passing 0.45-μm filter) was to be colloidal form (>3000 MW) beneath Oa horizons. Colloidal Bs horizon were less than 10% concentrations. Of truly dissolved 3000 MW membrane),...
Clean techniques are necessary for reliable measurement of trace metals in freshwaters at ambient, though not necessarily regulatory concentrations. Conventional sample handling methods were compared to clean 35 individual steps used protocols analysis filtrate and filter-retained forms Ag, Cd, Cu, Pb. Approximately two-thirds all contributed statistically significant amounts contamination the dissolved particulate Average a single contributing step was 300%, 141%, 200% three metals,...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence of Complete Retention Atmospheric Lead in the Soils Northern Hardwood Forested EcosystemsEdward X. Wang, F. Herbert. Bormann, and Gaboury. BenoitCite this: Environ. Sci. Technol. 1995, 29, 3, 735–739Publication Date (Print):March 1, 1995Publication History Published online1 May 2002Published inissue 1 March 1995https://pubs.acs.org/doi/10.1021/es00003a022https://doi.org/10.1021/es00003a022research-articleACS PublicationsRequest reuse...
The spatiotemporal chemical characteristics of the water column in Linsley Pond, a freshwater lake Connecticut, were studied from just before its stratification April through fall turnover December. Two low‐molecular‐weight thiols, glutathione and 3‐mercaptopropionic acid (MPA), detected at nanomolar concentrations column. GSH was (average ca. 5 nmol L −1 particulate phase 3 dissolved phase) surface near‐surface waters only covaried with chlorophyll a. Both MPA measured oxic anoxic regions....