GB/T 4615-2013Poly (vinyl chloride) -- Determination of residual vinyl chloride monomer -- Gas-chromatographic method (English PDF)

Preface

This Standard is written in accordance with rules given in GB/T 1.1-2009.

This Standard replaces GB/T 4615-2008 "Poly (vinyl chloride). Determination of residual vinyl chloride monomer content. Gas-chromatographic method".

Compared with GB/T 4615-2008, the major technical changes are as follows.

- MODIFY the Chinese name of the standard;

- ADJUST the scope of the standard (Chapter 1 of 2008 edition, Chapter 1 of this document);

- ADD chapter "Normative references";

- ADD chapter "Terms and Definitions";

- ADD "Warnings";

- ADJUST the structure of the standard and REMOVE method B;

- MODIFY the "sample weight and volume of solvent", "operational steps" and "chloride standard solution preparation" and other technical content ( Chapter 5 of this document);

- ADD chapter "Precision";

- REVISE Appendix A (Appendix A of this document);

- REVISE Appendix B (Appendix B of this document);

- ADD Appendix C;

- ADD Appendix D.

This Standard uses redrafting method to modify and adopt ISO 6401:2008 "Plastics -- Poly(vinyl chloride) -- Determination of residual vinyl chloride monomer -- Gas-chromatographic method".

Compared with ISO 6401:2008, this Standard has adjusted the structure considerably. Appendix C provides the changes and comparison list of chapter number between this Standard and ISO 6401:2008.

There exists technical differences between this Standard and ISO 6401:2008.

Appendix D gives the list of differences and the corresponding technical reasons.

For ease of use, this Standard also makes the following editorial changes.

- USE "µg/g" to replace "mg/kg" as the unit of sample content of residual vinyl chloride monomer;

- ADD Appendix C, PROVIDE the changes and comparison list of chapter number between this Standard and ISO 6401:2008;

- ADD Appendix D, GIVE the list of differences and the corresponding technical reasons.

This Standard is proposed by China Petroleum and Chemical Industry Federation.

This Standard shall be administered by the National Standardization Technical Committee - Plastic PVC Resin Product Branch (SAC/TC 15/SC 7).

Drafting organizations of this Standard. Xinjiang Zhongtai Chemical Co., Ltd.

and Jinxi Chemical Research Institute.

Main drafters of this Standard. Tan Chen, Liang Bin, Shi Yangqiu, and Wang Xiaohong.

The previous standards replaced by this Standard are.

- GB/T 4615-1984, GB/T 4615-2008.

Poly (vinyl chloride) –Determination of residual vinyl chloride monomer -Gas-chromatographic method Warning. The personnel who use this Standard shall have practical experience of regular lab. This Standard does not indicate all possible safety problems. Users are responsible for taking appropriate safety and health practices and to ensure compliance with the relevant conditions of the national regulations.

1 Scope

This Standard specifies the method that uses headspace gas-liquid chromatography to determine the monomer content of residual vinyl chloride in polyvinyl chloride (PVC).

This Standard applies to the determination of PVC resin and vinyl chloride monomer content in its compound, the detection range is 0.1 µg/g - 3.0 µg/g.

2 Normative references

For application of this document, the following documents are essential. For dated references, only the dated editions are applicable to this document. For undated references, the latest editions (including any amendments) apply to this document.

GB/T 2035 Plastic terms and their definitions (GB/T 2035-2008, ISO 472:1999, IDT)

3 Terms and definitions

Terms and definitions defined in GB/T 2035 apply to this document.

4 Principles

DISSOLVE/SWELL PVC sample into N, N'-dimethylacetamide solvent, USE headspace gas-liquid chromatography to determine vinyl chloride content in the sample.

5 Instruments

General laboratory instruments and the following equipment.

5.1 Gas chromatography (GC).

5.2 Hydrogen flame ionization detector (FID).

6 Reagents and materials

Reagents used are of analytical grade.