試験紙光電光度法によるホスフィン及びアルシンの定量用試験紙の耐光性の改善

概要

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A quantitative method, using tapes which have been impregnated with silver nitrate (AgNO_3) has been used in the detection of hydride gases such as phosphin and arsine. The hydride gas is absorbed on the surface of the tape and reacts with the silver nitrate to form a stain and the intensity of which can be measured quantitatively by an optics system to determine the concentration of the gas. Silver nitrate is extremely light sensitive and unstable. The tape coated with silver p-toluenesulfonate (AgC_7H_7SO_3) is more stable to light (about 1500 lx) and retains a white background for five times as long as the tape coated with silver nitrate. The sensitivity of the tape coated with silver p-toluenesulfonate for phosphin and arsine is nearly equal to that of the tape coated with silver nitrate.
社団法人日本分析化学会の論文
1992-12-05