Filters: Tags: Arsenic (X)461 results (576ms)
In vitro gastrointestinal method to estimate bioavailable arsenic in contaminated soils and solid media
Design of an epidemiologic study of drinking water arsenic exposure and skin and bladder cancer risk in a U.S. population
Skin Cancer Risk in Relation to Toenail Arsenic Concentrations in a US Population-based Case-Control Study
ADMMR map collection: Gladstone McCabe Subsurface Plan 7 of 12; 36 x 24 in.
ADMMR map collection: Gladstone McCabe, Section B; 1 in. to 50 feet; 38 x 37 in.
ADMMR map collection: Gladstone McCabe Subsurface Plan 5 of 12; 36 x 24 in.
Toxicity of inorganic and methylated arsenic to algal communities from lakes along an arsenic contamination gradient
The influence of groundwater chemistry on arsenic concentrations and speciation in a quartz sand and gravel aquifer
We examined the chemical reactions influencing dissolved concentrations, speciation, and transport of naturally occurring arsenic (As) in a shallow, sand and gravel aquifer with distinct geochemical zones resulting from land disposal of dilute sewage effluent. The principal geochemical zones were: (1) the uncontaminated zone above the sewage plume [350 µM dissolved oxygen (DO), pH 5.9]; (2) the suboxic zone (5 µM DO, pH 6.2, elevated concentrations of sewage-derived phosphate and nitrate); and (3) the anoxic zone [dissolved iron(II) 100–300 µM, pH 6.5–6.9, elevated concentrations of sewage-derived phosphate]. Sediments are comprised of greater than 90% quartz but the surfaces of quartz and other mineral grains are...
Environmental fate of roxarsone in poultry litter. Part II. Mobility of arsenic in soils amended with poultry litter
Poultry litter often contains arsenic as a result of organo-arsenical feed additives. When the poultry litter is applied to agricultural fields, the arsenic is released to the environment and may result in increased arsenic in surface and groundwater and increased uptake by plants. The release of arsenic from poultry litter, litter-amended soils, and soils without litter amendment was examined by extraction with water and strong acids (HCI and HNO3). The extracts were analyzed for As, C, P, Cu, Zn, and Fe. Copper, zinc, and iron are also poultry feed additives. Soils with a known history of litter application and controlled application rate of arsenic-containing poultry litter were obtained from the University of...