【摘要】 本文用乙醇代替二甲基甲酰胺作溶剂溶解吡唑酮，在ｐＨ７０的溶液中比色定量测定氰化物。氰化物在０～１μｇ／２５ｍｌ符合比尔定律。在６３０ｎｍ处，摩尔吸光系数ε＝８０×１０４。６次标准曲线相关系数为０９９９６～０９９９９２。若按取样２５０ｍｌ蒸馏测定，方法的检测下限为００００６ｍｇ／Ｌ。平均回收率９５３％，相对标准偏差为０８～６０％。其显色反应的选择性、稳定性、重现性均较好。显色液较稳定、易保存、无毒性。更多还原

【Abstract】 We dissolved C 3H 4ON 2 used ethanol replaces C 3H 8O,determined cyanide in solution (pH=7)by guantitative colorimetric analysis,cyanide tally with Bill Law among 0～1μg/25ml,in 630 nm,Mor absorption coefficient:ε=8 0×10 4,standard curve γ=0 9996～0 9999,(6 times).We determined sample 250ml by distillation,measure limit:0 0006mg/L,average regain rate 95 3%,standard deviation 0 8～6 0%,selectivity stability and reappearance ofapparent color reaction is better.Apparent color solution is stable,easyreserved and notoxicity.更多还原