水质.有效弱和可离解氰化物（WAD）的测定.第1部分：使用配体交换、流动注射分析（FIA）、气体扩散和安培检测的方法

[中文适用范围]： 本文件规定了测定各种类型的水（例如饮用水、地面水和地表水以及冶金加工尾矿回收水、堆浸贫水、磨浆尾矿和浸出溶液）中可用的 WAD 氰化物的操作定义方法，其中氰化物浓度为5 µg/l 至 2000 mg/l，以未稀释样品中的氰化物离子表示。 应用范围可以通过改变操作条件来改变，例如通过使用不同的进样量、更厚的膜、检测器响应等。 注：氰化物和溶液中络合的一些金属通过指定的分析方法测定，但不是全部总氰化物 (3,191) 中存在的金属络合物。 在该方法中，六种合适的质量浓度范围为 5 µg/l 至 50 µg/l、50 µg/l 至 500 µg/l、0.5 mg/l 至 5 mg/l、5 mg/l 至描述了50mg/l、50mg/l至500mg/l和500mg/l至2000mg/l。 [外文原描述]： This document specifies operationally defined methods for the determination of available WAD cyanide in various types of water such as drinking, ground, and surface, waters, and metallurgical processing tailings reclaim, heap leach barren, mill slurry tailings and leaching solutions, with cyanide concentrations from 5 µg/l to 2 000 mg/l expressed as cyanide ions in the undiluted sample. The range of application can be changed by varying the operation conditions, e.g. by using a different injection volume, thicker membrane, detector response, etc. NOTE ISO 2080:2008, 3.105, defines free cyanide. The concentration of available WAD cyanide includes free cyanide and some of the metals complexed in solution as determined by a specified analytical method but not all of the metal complexes present in total cyanide (3,191). In this method, six suitable mass concentration ranges from 5 µg/l to 50 µg/l, from 50 µg/l to 500 µg/l, from 0,5 mg/l to 5 mg/l, from 5 mg/l to 50 mg/l, from 50 mg/l to 500 mg/l and from 500 mg/l to 2 000 mg/l are described.