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１引言氰化物是环境监测和食品检验中必测的剧毒物之一。研究表明，在ｐＨ＝１０．５～１２．８的条件下，氰离子使银与安替比林基重氮氨基－２，４－二硝基苯（ＡＰＤＮＢＴ）络合物褪色，其褪色程度与氰离子的浓度呈良好的线性关系，从而建立了新的间接测定氰离子的分光光度?
1 Introduction Cyanide is one of the most virulent substances to be tested in environmental monitoring and food testing. The results show that under the condition of pH = 10.5 ~ 12.8, the cyanide ions fade the silver complex with the antibiotic diazido-2,4-dinitrobenzene (APDNBT), and the degree of discoloration And cyanide ion concentration showed a good linear relationship, thus establishing a new indirect determination of cyanide spectrophotometry?