Water quality — Determination of sodium and potassium — Part 2: Determination of potassium by atomic absorption spectrometry
NORMA vydaná dňa 28.4.1993
Označenie normy: ISO 9964-2:1993
Dátum vydania normy: 28.4.1993
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: 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.