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ISO 20950-1 : 1ED 2018

M00023570

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ISO 20950-1 : 1ED 2018

WATER QUALITY - DETERMINATION OF AVAILABLE WEAK AND DISSOCIABLE (WAD) CYANIDE - PART 1: METHOD USING LIGAND EXCHANGE, FLOW INJECTION ANALYSIS (FIA), GAS-DIFFUSION AND AMPEROMETRIC DETECTION

International Organization for Standardization

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Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Interferences
5 Principle
6 Reagents
7 Apparatus
8 Sampling and sample preparation
9 Procedure
10 Calculations
11 Expression of results
12 Test report
Annex A (informative) - Examples of flow injection systems
Annex B (normative) - Determination of the real cyanide
        concentration in the potassium cyanide solution or
        potassium tetracyanozincate solution
Annex C (informative) - Performance data
Bibliography

Abstract

Defines 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 [mu]g/l to 2000 mg/l expressed as cyanide ions in the undiluted sample.

General Product Information

Document Type Standard
Status Current
Publisher International Organization for Standardization
Committee TC 147