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ISO 23161:2018 Soil quality - Determination of selected organotin compounds - Gas-chromatographic method >
ISO 23161:2018 Soil quality - Determination of selected organotin compounds - Gas-chromatographic method, 2018
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Principle
- 5 Reagents
- 5.1 General
- 5.2 Chemicals
- 5.3 Standards
- 5.4 Preparation of reagents and solutions
- 5.4.1 General requirements
- 5.4.2 Blank solution
- 5.4.3 Aqueous calibration solutions (multicomponent solution of organotin compounds in water)
- 5.4.4 Methanolic potassium hydroxide solution
- 5.4.5 Acetate buffer solution
- 5.4.6 Solvent mixture
- 5.4.7 Derivatization agent
- 5.5 Clean-up
- 5.5.1 General requirements
- 5.5.2 Silica gel for the clean-up column
- 5.5.3 Aluminium oxide for the clean-up column
- 5.5.4 Clean-up column
- 5.5.5 Eluent for extract cleaning with silica gel
- 5.5.6 Eluent for extract cleaning with aluminium oxide
- 6 Apparatus
- 7 Procedure
- 7.1 Sampling and sample pretreatment
- 7.2 Sample extraction
- 7.2.1 General
- 7.2.2 Acidic extraction and derivatization of an aliquot
- 7.2.3 Alkaline treatment and in situ derivatization
- 7.2.4 Separate determination of TTBT in the field-moist sample
- 7.3 Clean-up of the extract
- 7.3.1 General
- 7.3.2 Silica and aluminium oxide clean-up
- 7.4 Determination of dry mass
- 7.5 Measurement
- 7.5.1 Gas chromatographic separation
- 7.5.2 Detection and identification
- 8 Calibration
- 9 Recovery rates of the internal standard compounds
- 10 Quantification
- 11 Expression of results
- 12 Validation
- 13 Test report
- Annex A (informative) Information about the procedure
- Annex B (informative) Additional clean-up procedures
- Annex C (informative) Information about typical instrumental conditions
- Annex D (informative) Information about GC-MS identification
- Annex E (informative) Performance data
- Bibliography [Go to Page]