ISO 9964-1:1993 PDF
Water quality — Determination of sodium and potassium — Part 1: Determination of sodium by atomic absorption spectrometry
Water quality — Determination of sodium and potassium — Part 1: Determination of sodium by atomic absorption spectrometry
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 29 апреля 1993 г.
- Издание:
- ISO IS 9964 edition 1 version 1
- ICS:
- 13.060.50
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.
Abstract
Overview
ISO 9964-1:1993 - "Water quality - Determination of sodium and potassium - Part 1: Determination of sodium by atomic absorption spectrometry" specifies a validated flame atomic absorption spectrometry (AAS) method for measuring dissolved sodium in water. The method uses cesium chloride as an ionization suppressant, direct aspiration into an air/acetylene flame and absorbance measurement at 589.0 nm. It is suitable for routine analysis of raw and potable waters; the working concentration interval given in the standard is 5 mg/L to 50 mg/L (the range can be extended by applying different dilution factors).
Key Topics and Requirements
- Principle: addition of cesium chloride (CsCl) to suppress ionization, direct aspiration into an air/acetylene flame and measurement at 589.0 nm using flame AAS.
- Reagents: analytical-grade acids (HCl or HNO3), prepared CsCl solution, sodium primary and working standards.
- Instrumentation: flame atomic absorption spectrometer with a hollow-cathode sodium lamp, photomultiplier sensitive to the red region, recommended spectral bandwidth
Технические детали
- Технический комитет
- ISO/TC 147/SC 2 - Physical, chemical and biochemical methods
- SKU
- ISO 9964-1:1993
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