ISO 20295:2018
Soil quality — Determination of perchlorate in soil using ion chromatography
This document specifies a method for the determination of perchlorate in soil and soil materials.
Under the conditions specified in this document, a concentration as low as 0,1 mg/kg can be determined.
The working range is restricted by the ion-exchange capacity of the separator column. Dilution of the water extracts to the working range can be necessary.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences
6 Reagents
7 Apparatus
8 Procedure
8.1 Pre-treatments
8.2 Extraction
8.3 Ion chromatography
8.3.1 General
8.3.2 Calibration
8.3.3 Measurement of perchlorate
9 Quality control
9.1 Performance of the separator column
9.2 Validity check of the calibration function
10 Calculation
11 Expression of results
12 Test report
Annex A (informative) Example of ion chromatography conditions and the selection of extraction method
Annex B (informative) Results of interlaboratory validation study
Annex C (informative) Elimination of dissolved sulfate, chloride, hydrogen carbonate, carbonate and metals
Annex D (informative) Determination of perchlorate using inline matrix elimination and applying re-injection analysis
Annex E (informative) Determination of perchlorate using inline matrix elimination and concentration applying two dimensional ion chromatography (2D)
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Interferences
6 Reagents
7 Apparatus
8 Procedure
8.1 Pre-treatments
8.2 Extraction
8.3 Ion chromatography
8.3.1 General
8.3.2 Calibration
8.3.3 Measurement of perchlorate
9 Quality control
9.1 Performance of the separator column
9.2 Validity check of the calibration function
10 Calculation
11 Expression of results
12 Test report
Annex A (informative) Example of ion chromatography conditions and the selection of extraction method
Annex B (informative) Results of interlaboratory validation study
Annex C (informative) Elimination of dissolved sulfate, chloride, hydrogen carbonate, carbonate and metals
Annex D (informative) Determination of perchlorate using inline matrix elimination and applying re-injection analysis
Annex E (informative) Determination of perchlorate using inline matrix elimination and concentration applying two dimensional ion chromatography (2D)
Bibliography