摘要
本文提出了一个测定气体中微量ＣＯＳ的分光光度法，并对测定的适宜条件进行了研究，在乙醇溶液中，羰基硫可与乙醇胺反应，定量地转化为Ｈ＿２Ｓ，后者以常用的亚甲基兰分光光度法进行测定，即可求出ＣＯＳ的含量，本法操作简单，灵敏度高，重现性好，ＣＯＳ在８～８５μｇ／ｍＬ范围内符合吸收定律，可用于半水煤气等工业气体中微量ＣＯＳ的测定。
In this paper,micro-amount carbonyl sulfide in gas has been determined by spec-trophotometry and optimum condition of determining has been research. Carbonyl sulfide reatedwith alcoholic monoethanolamine to form hydrogen sulfide in alcohol. It was determlined bymethylene blue spectrophotometry,and amount of COS was calculated. The method was repid,sensitive,reproducible and simpler than other methods. Beer's law is obeyed in the range of 8～85μg/25mL for carhonyl sulfied. It was applied determining micro-amount carbonyl sulfide inwalergas.
关键词
乙醇胺
羰基硫
分光光度法
alcoholic monoethanolamine
carbonyl sulfide
methylene blue procedure
