ISO 22066:2020 水质 总氰化物的测定 气体扩散和安培检测用分段流动注射、在线紫外消化分析的方法

标准编号：ISO 22066:2020

中文名称：水质 总氰化物的测定 气体扩散和安培检测用分段流动注射、在线紫外消化分析的方法

英文名称：Water quality — Determination of total cyanide — Method using segmented flow injection, in-line ultraviolet digestion analysis by gas diffusion and amperometric detection

发布日期：2020-09

标准范围

本文件规定了各种类型水中总氰化物测定的操作定义方法，如饮用水、地下水、地表水、废水、冶金加工尾矿回收溶液、堆浸贫溶液、矿浆尾矿滤液和浸出溶液，氰化物浓度在5μg/l到2000 mg/l之间，以未稀释样品中的氰化物离子表示。可通过降低灵敏度来扩展应用范围（图A.1.）。注ISO 2080:2008第3.105节定义了游离氰化物。ISO 2080:2008，3.191中定义的总氰化物浓度包括游离氰化物，氰化物与溶液中的金属络合为氰化物阴离子，但不一定包括通过规定的分析方法测定的所有金属氰化物络合物。在该方法中，描述了六个合适的质量浓度范围，从5μg/l到50μg/l，从50μg/l到500μg/l，从0,5 mg/l到5 mg/l，从5 mg/l到50 mg/l，从50 mg/l到500 mg/l，从500 mg/l到2000 mg/l。

This document specifies operationally defined methods for the determination of total cyanide in various types of water such as drinking water, ground water, surface water, wastewaters, metallurgical processing tailings reclaim solution, heap leach barren solution, mill slurry tailings filtrate 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 extended by reducing the sensitivity (Figure A.1.).NOTE ISO 2080:2008, 3.105, defines free cyanide. The concentration of total cyanide as defined in ISO 2080:2008, 3.191 includes free cyanide, cyanide complexed with metals in solution as cyanide anion, but not necessarily all of the metal cyanide complexes present as determined by a specified analytical method.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.

标准预览图