EN ISO 14403-2:2012

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 Calculation
11 Expression of results
12 Test report
Annex A (informative) - Examples of flow systems
Annex B (normative) - Determination of the real
        cyanide concentration in the potassium
        cyanide solution
Annex C (informative) - Example for the determination
        of total cyanide and free cyanide by
        continuous flow analysis (CFA) with
        gas diffusion and amperometric detection
Annex D (informative) - Performance data
Bibliography

ISO 14403-2:2012 specifies methods for the determination of cyanide in various types of water (such as ground, drinking, surface, leachate, and waste water) with cyanide concentrations usually from 2 µg/l to 500 µg/l expressed as cyanide ions in the undiluted sample. The range of application can be changed by varying the operation conditions, e.g. by diluting the original sample or changing the pathlength of the flow cell.In this method, a suitable mass concentration range from10 µg/l to 100 µg/l is described.Seawater can be analysed with possible changes in sensitivity and adaptation of the reagent and calibration solutions to the salinity of the samples.