Micro-, Semimicro-, and Macrodetermination of Halogens in Organic Compounds

Ethanolamine in the Determination of Mercury

“…The dioxane used with monoethanolamine and sodium for liberating mercury bound directly to carbon was made halogen-free when halogen was to be determined in the organic compound simultaneously. For this purpose it was refluxed with monoethanolamine and sodium and then distilled (2). Acetone employed for washing and drying was dried over calcium chloride and distilled.…”

“…A simple cold-finger reflux condenser serves to prevent loss of amine. The apparatus is thus essentially the same as that employed by the author for determining halogens on a micro scale (2). For filtration the usual Pregl micro halogen arrangement is used.…”

Pesticide Residues, Determination of Organic Chlorides and Residues from Chlorinated Pesticides by Combustion Analysis

“…Microchemists often use such combustion methods (3) and similar techniques have been adapted to the analysis of chlorinated pesticide residues (7). The success of these adaptations has been possible through utilization of chromatographic and other separation techniques which concentrate the pesticide residue in a relatively small sample (<1 gram).…”

A colorimetric method for determining small amounts of trichloroethylene in vegetable oils

“…Methods for determining trichloroethylene in a variety of materials have been described by a number of investigators (8,9,10,11). The most generally used method for detecting or estimating traces of TCE is the Fujiwara pyridine-caustic soda color test (7).…”