環境中クロロピクリンの測定法

概要

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Methods of determination of chloropicrin in air, river water and soil by gas chromatography were studied. Air was taken in a tedlar bag, and chloropicrin in the air was determined with an electron capture detector, or by the use of the cold trap method with liquid oxgen and a flame ionization detector. In the samples containing 1000 ppm, 1 ppm and 10 ppb of chloropicrin, about 90% and (80〜90)% of the chloropicrin remained in a glass bottle and a tedlar bag after 24 and 48 hours, respectively, but below 4 ppb recoveries was not enough though the samples were determined immediately after preparation. Chloropicrin in river water was extracted with hexane, and determined with an electron capture detector. About 100% of 4 ppm, 500 ppb, 10 ppb and 1 ppb of chloropicrin in the water were recovered by this method. We applied Tagawa's method to analysis of chloropicrin in soil, and recoveries were satisfactory. Minimum detectable concentrations of chloropicrin in river water and soil were 0.1 ppb and 5 ppb, respectively. The present methods were applied to determine chloropicrin in air, river water and soil of a place disinfected with it.
社団法人日本分析化学会の論文
1979-03-05