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eLibrary > BS EN ISO 787-28:2020 General methods of tests for pigments and extenders - Determination of total content of polychlorinated biphenyls (PCB) by dissolution, cleanup and GC-MS >

BS EN ISO 787-28:2020 General methods of tests for pigments and extenders - Determination of total content of polychlorinated biphenyls (PCB) by dissolution, cleanup and GC-MS, 2020

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BS EN ISO 787-28:2020 General methods of tests for pigments and extenders - Determination of total content of polychlorinated biphenyls (PCB) by dissolution, cleanup and GC-MS, 2020

National foreword
European foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Sampling
6 Procedure [Go to Page]
6.1 General
6.2 Clean-up to eliminate interfering species
6.3 Separation and quantification
7 Reagents [Go to Page]
7.1 Safety precautions
7.2 Reagents, solvents and absorbents
7.3 Internal reference materials for PCBs, 13C12-labelled
7.4 Cleaning/disposal agents
8 Apparatus
9 Procedure [Go to Page]
9.1 Preparation of test sample
9.2 Liquid-liquid extraction [Go to Page]
9.2.1 Separation funnel
9.2.2 Ludwig extraction
9.3 Clean-up [Go to Page]
9.3.1 General
9.3.2 Diatomaceous earth-sulfuric acid column (optional)
9.3.3 Gel permeation (size exclusion) chromatography/porous styrene divinylbenzene beads-column (optional)
9.3.4 Multilayer columns (obligatory)
9.3.5 Alumina column (optional)
9.4 Preparation of GC solution and GC procedure
9.5 Calculation and quantitation procedure
10 Test report
Annex A (informative) Nomenclature of PCBs
Bibliography [Go to Page]

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BS EN ISO 787-28:2020 General methods of tests for pigments and extenders - Determination of total content of polychlorinated biphenyls (PCB) by dissolution, cleanup and GC-MS, 2020

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