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本文首次报道用涂丝Ａｇ－Ａｇ_２Ｓ电极测定制革脱毛废水中微量氰化物（ＣＮ－）的方法研究。特别是对大量硫离子（Ｓ２－）干扰的消除，不需预行蒸馏，分离，吸收和富集等繁杂手续，用自行研制的高效脱硫催化剂，一次除硫率可达９８％，从根本上简化了分析手续。文中对延用至今的Ａｇ（ＣＮ）２指示剂的配制方法和使用浓度作了新的改进，加之成功地在ＩＳＡＢ中添加有机溶剂等，较大程度地提高了方法的灵敏度，测定线性范围在１０－３～１０－７ｍｏｌ·ｌ－１ＣＮ－浓度，检测下限可达１ｐｐｂ，标准偏差小于０．０１５ｐｐｍ，回收率为９６．５％～１０５％，方法简便，快速，准确，灵敏度高且不受试样颜色和混浊度的影响，可广泛应用于制革，食品，化工等环境保护对氰化物的检测分析。
This is the first report of a method for the determination of trace cyanide (CN-) in tanning wastewater by using a coated Ag-Ag_2S electrode. Especially for the elimination of a large number of sulfide ions (S2-) interference, without pre-distillation, separation, absorption and enrichment and other complicated procedures, with their own high-efficiency desulfurization catalyst, a sulfur removal rate of up to 98%, fundamentally Simplify the analysis procedures. In this paper, new methods and concentration of Ag (CN) 2 indicator which have been used up to now are introduced. In addition, the successful addition of organic solvent to ISAB has greatly improved the sensitivity of the method. The linear range 10-3 ~ 10-7mol·L-1CN-concentration, the detection limit of up to 1ppb, the standard deviation of less than 0.015ppm, the recovery rate of 96.5% to 105%, the method is simple, fast, accurate, high sensitivity and not Sample color and turbidity effect, can be widely used in leather, food, chemical and other environmental protection detection and analysis of cyanide.