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Assessment of Potential Health Risks Associated with Ingesting Heavy Metals in Fish Collected from a Hazardous-Waste Contaminated Wetland in Louisiana, USA
The results indicate that subsistence fishermen had the highest risk for systemic effects, with an exposure exceeding the Environmental Protection Agency (EPA) Reference Dose value. Expand
Toxicity evaluation of single and chemical mixtures of roundup, Garlon-3A, 2,4-D, and syndets surfactant to channel catfish (Ictalurus punctatus), bluegill sunfish (Lepomis microchirus), and crawfish
L Lethal concentrations of herbicide mixtures were found to be lower than recommended field formulations, but it was anticipated that such hazardous amounts would be rarely reached in roadside ditches where the presence of large volumes of water is likely to provide dilutions to levels that may not pose a threat to aquatic life. Expand
Health Risks from Exposure to Metals in Household Dusts
The results of this study indicate that exposure to indoor and/or outdoor dust presents a potential health risk for Louisiana residents. Expand
Levels and toxicities of selected inorganic and organic contaminants in a swamp environment
Field and laboratory studies were conducted to determine the levels of cadmium, lead and hexachlorobutadiene, HCBD, in various samples collected from a swamp environment in Louisiana, and to assessExpand
Biotransformation of the pesticide sodium arsenate.
Biotransformation of sodium arsenate was studied in pure cultures of 5 bacterial species using a mineral salt and limited carbon source medium to describe rates of biodegradation of the parent compound and rates of production of metabolites. Expand
The effects of ammonium sulphate and urea upon egg hatching and miracidial survival of Schistosoma mansoni.
Ammonium sulphate and urea concentrations effective in killing S. mansoni eggs and miracidia at relatively high concentrations were found to be of practical value and about one to two orders of magnitude greater than the actual field application rates. Expand
Toxicity of selected arsenical compounds in short term bacterial bioassays
This study determined the toxic effect of selected arsenical compounds using a bacterial population as test species to determine the toxicity of pollutants in the environment. Expand
Chlorpyrifos: An Unwelcome Pesticide in our Homes
Studies conducted in indoor environments after termiticide, crack-and-crevice, broadcast, or fogger applications have shown that chlorpyrifos exposure can occur via inhalation of residual air concentrations, dermal or oral exposure from residues on floors and carpets, children toys, food, and dust. Expand
Differential Cytotoxicity and Gene Expression in Human Liver Carcinoma (HepG2) Cells Exposed to Arsenic Trioxide, and Monosodium Acid Methanearsonate (MSMA)
Research in our laboratory has demonstrated that a trivalent form of arsenic such as arsenic trioxide (AT) has the ability to cause significant cytotoxicity, and induction of a significant number ofExpand