Water quality - Determination of chromium - Atomic absorption spectrometric methods
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 ÎĽg/l and 100 ÎĽg/l of chromium by injecting a sample volume of 20 ÎĽl. 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 |