标准摘要
[中文适用范围]: 所规定的三种方法适用于每升总氰化物含量少于 50 毫克和少于 100 毫克的水,但可以通过适当稀释样品来测定更高的浓度。这些方法的适用范围和相应的范围如下:使用吡啶/巴比妥酸的光度法:0.002 至 0.025 毫克;使用丁达尔效应的滴定法:0.005 毫克;使用指示剂的滴定法:0.05 毫克。干扰测定的离子和化合物列于表 1。 [外文原描述]: The three methods specified are applicable to water containing less than 50 mg per litre and less than 100 mg of total cyanide per litre, but higher concentrations may be determined by suitable dilution of the sample. The methods suitable and corresponding ranges are as follows: photometric method with pyridine/barbituric acid: 0,002 to 0,025 mg; titrimetric method using the tyndall effect: > 0,005 mg; titrimetric method using an indicator: > 0,05 mg. Ions and compounds interfering with the determination are listed in table 1.
英文名称Water quality — Determination of cyanide — Part 2: Determination of easily liberatable cyanide