検知管による水中の微量テトラクロロエチレンの簡易定量法

概要

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Concerning waste water from a laundry machine, a use of gas detector tube has been studied for the determination of tetrachloroethylene (TCE) in water. In a syringe method, 100 ml of water containing TCE and 108 ml of air are taken in a 200 ml glass syringe. After vigorous shaking, 100 ml of the equilibrated air is taken out to pass through a TCE gas detector tube. In a more simplified method, 200 ml of water containing TCE is taken in a 500 ml stoppered glass bottle. After shaking, 50 ml of the equilibrated air in a head space is passed through a detector tube by means of a disposable syringe. Concentration of TCE in water is then calculated by using Henry's constant determined in a separate experiment. The detection limit of a gas detector tube is 3 ppm, while a Henry's constant, expressed by ppm TCE in air/mg l^<-1> TCE in water attains the value of about 70. Consequently the limit of detection of TCE in water is about 0.1 mg/l for the syringe method, and about 0.3 mg/1 for the simplified bottle-equilibration method.
社団法人日本分析化学会の論文
1985-04-05