BS ISO 20280:2007
Current
The latest, up-to-date edition.
Soil quality. Determination of arsenic, antimony and selenium in aqua regia soil extracts with electrothermal or hydride-generation atomic absorption spectrometry
05-30-2008
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Procedure
6.1 Test portion
6.2 Aqua regia extraction for arsenic, antimony
and selenium
6.3 Blank test solution
7 Method A - Electrothermal atomic absorption
spectrometry: Preparation of calibration
solutions and measurement
7.1 General
7.2 Calibration solutions for arsenic
7.3 Calibration solutions for antimony
7.4 Calibration solutions for selenium
7.5 Calibration and determination with ETAAS
measurement
8 Method B - Hydride-generation atomic absorption
spectrometry: Preparation of calibration solutions and
measurement
8.1 Pre-reduction and calibration for the determination
of arsenic
8.2 Pre-reduction and calibration for the determination
of antimony
8.3 Pre-reduction and calibration for the determination
of selenium
8.4 Measurement of calibration and test solutions by
hydride-generation atomic absorption spectrometry
9 Plotting the calibration graph
10 Calculation
10.1 General
10.2 Calculation according to the method of standard
additions
11 Expression of results
12 Interferences
13 Precision
14 Test report
Bibliography
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