ISO-9964-3 › Water quality - Determination of sodium and potassium - Part 3: Determination of sodium and potassium by flame emission spectrometry
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The principle of the method specified is aspirating the sample into a gas flame of sufficient thermal energy to cause any sodium and potassium present to emit its characteristic radiation and measuring the intensity at a wavelength of 589,0 nm for sodium and 766,5 nm for potassium. Applies to water samples with a mass concentration of sodium and potassium of up to 10 mg/l. For higher concentrations, a smaller test portion is taken for analysis. The lower limits of determination are less than 0,1 mg/l for both sodium and potassium.
To find similar documents by classification:
13.060.50 (Examination of water for chemical substances)
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Document Number
ISO 9964-3:1993
Revision Level
1ST EDITION
Status
Current
Publication Date
May 1, 1993
Committee Number
ISO TC 147/SC 2