ガスクロマトグラフ用ガス電極検出器

概要

論文の詳細を見る
A simple, sensitive, selective gas sensing probe for gas chromatography, designated as gas electrode detector, is described. This probe is constructed from a commercially available ion-selective electrode. Components eluted from a GC column are passed through a heated silica tube (1000×0.5 mm i. d.), where they undergo a hydrogenolysis, and chlorine compounds and bromine compounds are converted into hydrogen chloride and hydrogen bromide, respectively. The decomposition gases are blown upon the thin stream of the absorption solution which is continuously pumped (0.09 ml/min) tangentially across an electrode surface. Whereupon the hydrogen chloride and hydrogen bromide are dissolved in the absorption solution. The potentiometric output of the ion-selective electrode is converted by an antilogarithmic converter and recorded. The limit of detection for chlorine compounds is 6×10^<-9>g of 1,2-dichloroethane and that for bromine compounds is 5×10^<-11>g of 1,2-dibromoethane. Linear dynamic ranges for both chlorine and bromine compounds are over 10^3.
社団法人日本分析化学会の論文
1979-05-05