Solvent release into a sandy aquifer. 1. Overview of source distribution and dissolution behavior

Article Abstract:

Researchers studied the deposition of three inorganic solvents in sandy soil, and determined the effectiveness of using methanol/water for dissolution of the chemicals. Researchers injected trichloroethylene, chloroform, and tetrachloroethylene into a sandy aquifer to simulate a spill. These organic solvents have a low solubility in water. Thus, they tend to stay in the soil. Unfortunately, they do break down slowly, contaminating the ground water at a level above that considered medically acceptable. Research data also shows that a small amount volatilizes into the atmosphere. At the end of the study, the contaminated soil was dug up.

Waste Management and Remediation Services, Water Pollution, Pollutants produced & recycled, Chloroform, Trichloroethylene, Industrial Inorganic Chemicals, Inorganic Chemicals, Other Basic Inorganic Chemical Manufacturing, Solvents, Inorganic compounds

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The enantioselective bioaccumulation of chiral chlordane and alpha-HCH contaminants in the polar bear food chain

Article Abstract:

Researchers from Sweden and Canada investigated the enantiomer ratios of chiral organochlorine pollutants in the polar bear food chain at the Resolute Bay area of the Canadian Arctic using chiral gas chromatography.

Organic Chemicals NEC, Usage, Organic compounds, Arctic Archipelago, Gas chromatography

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Measurement of indoor formaldehyde concentrations with a passive sampler

Article Abstract:

Researchers from Australia and Germany developed a Ferm type passive sampler technique to measure mixing ratios of formaldehyde gas in indoor air.

Australia, Germany, Formaldehyde

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