Ag^＋—Cadion—Tx—100胶束增溶光度法测定废水中的氰化物

Indirect Spectrophotometric Determination of Trace Cyanide by Means or the Colour Reaction of Silver with Cadion in Presence of Triton X-100

在ＴｒｉｔｏｎＸ－１００存在下，利用Ａｇ＋与Ｃａｄｉｏｎ的灵敏显色反应，建立了痕量氰化物的间接光度测定方法。该方法灵敏度高，选择性好，可用于废水中痕量氰化物的测定。测定范围为０—１０μｇ／２５ｍｌ，其相对标准偏差小于９．０％。

ilver gives a colour reaction with Cadion in the presence of Triton X-100, and suppression of the colour competitive complex ion of the silver can be used for the indirect spectrophotometric determination of trace cyanide.Cyanide in waste water can be separated by distillation from other ions that also interfere, and then determinated. The determination range of this method is 0-- 10 μg/25 ml. The recoveries Of standard cyanide added to waste water samples are in the range of 91. 0- 100%, and its relative standard devistion is less than 9%.