Water quality. Determination of available free cyanide (pH 6) using flow injection analysis (FIA), gas-diffusion and amperometric detection
This International Standard specifies methods for the determination of available free cyanide at pH 6 in various types of water (such as ground, drinking, surface, leachate, waste water, and metallurgical processing waste water) with cyanide concentrations from 5 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 using a different injection volume (Figure A.1).
NOTEĀ 1 ISOĀ 2080:2008, 3.105, the concentration of available free cyanide as determined by a specified analytical method.
NOTEĀ 2 The detection limit for this method was determined by interlaboratory testing at the national level using ASTM International D6512 Practice for Interlaboratory Quantitation Estimate.
NOTEĀ 3 Free cyanides according to ISOĀ 14403 and ISOĀ 17690 are not equivalent.
In this method, two suitable mass concentration ranges from 5 µg/l to 50 µg/l and from 50 µg/l to 500 µg/l are described.
| SDO | BSI: British Standards Institution |
| Document Number | ISO 17690 |
| Publication Date | March 31, 2015 |
| Language | en - English |
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| Supercedes | |
| Committee | EH/3/2 |
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