ISO 9964-1:1993
ISO 9964-1:1993

ISO 9964-1:1993

April 1993
International standard Current

Water quality — Determination of sodium and potassium — Part 1: Determination of sodium 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 589,0 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.

View the extract
Main informations

Collections

International ISO standards

Publication date

April 1993

Number of pages

4 p.

Reference

ISO 9964-1:1993

ICS Codes

13.060.50   Examination of water for chemical substances

Print number

1
Sumary
Water quality — Determination of sodium and potassium — Part 1: Determination of sodium 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 589,0 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.

ZOOM ON ... the Requirements department

To comply with a standard, you need to quickly understand its issues in order to determine its impact on your activity.

The Requirements department helps you quickly locate within the normative text:

  • mandatory clauses to satisfy,
  • non-essential but useful clauses to know, such as permissions and recommendations.

The identification of these types of clauses is based on the document "ISO/IEC Directives, Part 2 - Principles and rules of structure and drafting of ISO documents" as well as on a constantly enriched list of verbal forms.

With Requirements, quickly access the main part of the normative text!


Need to identify, monitor and decipher standards?