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Tetrachloroethylene (PCE) is a toxic compound essentially used as a degreasing and dry-cleaning solvent. A methanogenic and sulfate-reducing consortium that dechlorinates and mineralizes high concentrations of PCE was derived from anaerobically digested sludge obtained from a waste water treatment plant (Bourg-en-Bresse, France). A methanogenic bacterium,(More)
An improved method has been developed for the quantitative determination of cyanide in human blood by headspace gas chromatography with electron-capture detection. In this novel method, cyanide was detected after conversion of hydrogen cyanide into cyanogen chloride by a reaction with chloramine T. The advantage of this new procedure lies in the fact that(More)
The prevalence of human ochratoxicosis in France is being determined using serum and plasma collected from apparently healthy people. The analytical method is based on the partition coefficient of ochratoxin A in aqueous and organic solvents, according to pH. High-performance liquid chromatography and spectrofluorimetry are used for detection and(More)
Several reports have demonstrated biotransformation of tetrachloroethylene at low concentrations under strict anaerobic conditions by sequential reductive dechlorination (Fathepure and Boyd, 1988a; Freedman and Gosset, 1989). During this biodegradation, trichloroethylene (TCE), 1,1dichloroethylene, vinylidene chloride (DCE), and vinyl chloride (VC) are the(More)
A method has been developed for the determination of beta-propiolactone by derivatizing it to the volatile N-hexyl-3-heptafluorobutanoyloxypropanamide, which can be separated and identified by a capillary CP-Sil 8 column, and detected by an electron capture detector (ECD). First, beta-propiolactone is reacted with N-hexylamine to yield(More)
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