ISO 12020:1997 PDF

Water quality — Determination of aluminium — Atomic absorption spectrometric methods

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Title (English):

ISO 12020:1997

Water quality — Determination of aluminium — Atomic absorption spectrometric methods

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 10
Publication date:: February 27, 1997
Edition:: ISO IS 12020 edition 1 version 1
ICS:: 13.060.50

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Description (English):

Describes a flame atomic absorption spectrometric method and a graphite furnace atomic absorption spectrometric method for the determination of aluminium in water. The flame AAS method is applicable to mass concentrations from 5 mg/l to 100 mg/l and the graphite furnace AAS method is applicable to mass concentrations from 10 g/l to 100 g/l in water and waste water.

Technical details

Technical committee: ISO/TC 147/SC 2 - Physical, chemical and biochemical methods
SKU: ISO 12020:1997

Abstract

Overview

ISO 12020:1997 specifies two atomic absorption spectrometric (AAS) methods for the determination of aluminium (Al) in water and wastewater. It covers a flame AAS procedure (nitrous oxide/acetylene flame) and a graphite furnace AAS procedure, including required reagents, sampling and sample-preparation steps, calibration, measurement and expression of results. Key analytical parameters include measurement at 309.3 nm, background correction and procedures to avoid contamination.

Key Topics

Scope and detection ranges
- Flame AAS: applicable for 5 mg/L to 100 mg/L (higher by dilution; lower possible with careful evaporation or by using graphite furnace).
- Graphite furnace AAS: applicable for 10 µg/L to 100 µg/L (with typical injection volumes around 20 µL; working range can be shifted by dilution or sample volume change).
Reagents & matrix modifiers
- Common reagents: nitric acid, hydrochloric acid, hydrogen peroxide.
- Flame AAS: caesium chloride added to measuring solution.
- Graphite furnace: magnesium nitrate matrix modifier; sulfuric acid injected to compensate fluoride interferences.
Sampling & sample preparation
- Filtration (0.45 µm) for dissolved aluminium.
- Acidification to pH

Related standards

Other ISO standards

Overview

Key Topics

Scope and detection ranges
- Flame AAS: applicable for 5 mg/L to 100 mg/L (higher by dilution; lower possible with careful evaporation or by using graphite furnace).
- Graphite furnace AAS: applicable for 10 µg/L to 100 µg/L (with typical injection volumes around 20 µL; working range can be shifted by dilution or sample volume change).
Reagents & matrix modifiers
- Common reagents: nitric acid, hydrochloric acid, hydrogen peroxide.
- Flame AAS: caesium chloride added to measuring solution.
- Graphite furnace: magnesium nitrate matrix modifier; sulfuric acid injected to compensate fluoride interferences.
Sampling & sample preparation
- Filtration (0.45 µm) for dissolved aluminium.
- Acidification to pH

ISO 12020:1997 PDF

Technical details

Abstract

Overview

Key Topics

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Overview

Key Topics

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