Water quality - Determination of sodium and potassium - Part 2: Determination of potassium by atomic absorption spectrometry
The principle of the method specified is adding a caesium chloride solution to the sample as an ionization suppressant, aspirating the sample directly into the air/acetylene flame of an atomic absorption spectrometer and measuring the absorbance at a wavelength of 766,5 nm. Applies to water samples with a mass concentration of potassium in the range from 5 mg/l to 50 mg/l. This range can be extended if other dilution factors are chosen.
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 9964 |
| Publication Date | Not Available |
| Language | en - English |
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| Supercedes | |
| Committee | ISO TC 147/SC 2 |
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