This International Standard specifies two methods for the determination of chromium in water by atomic absorption spectrometry. The two methods are covered in separate clauses as follows:
Clause 3 is applicable to the analysis of water and waste water when the concentration range is between 0,5 mg/l and 20 mg/l of chromium. When the concentration is below 0,5 mg/l, the determination can be carried out after carefully evaporating an acidified sample to small volume, taking care to avoid the formation of a precipitate.
Clause 4 is applicable to the analysis of water and waste water when the concentration range is between 5 μg/l and 100 μg/l of chromium by injecting a sample volume of 20 μl. It is applicable to the determination of higher concentrations by using a smaller sample volume.
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 9174 |
| Publication Date | Not Available |
| Language | en - English |
| Page Count | |
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| Supercedes | |
| Committee | ISO TC 147/SC 2 |