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GB/T 4615-2013: Poly (vinyl chloride) -- Determination of residual vinyl chloride monomer -- Gas-chromatographic method Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 4615: Historical versions
GB/T 4615-2013: Poly (vinyl chloride) -- Determination of residual vinyl chloride monomer -- Gas-chromatographic method---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT4615-2013 ICS 83.080.20 G 32 GB National Standard of the People's Republic of China Replacing GB/T 4615-2008 Poly (vinyl chloride) - Determination of residual vinyl chloride monomer - Gas-chromatographic method (ISO 6401.2008, Plastics - Poly (vinyl chloride) - Determination of residual vinyl chloride monomer - Gas-chromatographic method, MOD) 聚氯乙烯 Issued on: NOVEMBER 12, 2013 Implemented on: MAY 1, 2014 Issued by. General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; China National Standardization Management Committee Table of ContentsPreface ... 3 1 Scope ... 5 2 Normative references ... 5 3 Terms and definitions ... 5 4 Principles ... 6 5 Instruments ... 6 6 Reagents and materials ... 6 7 Sample preparation and storage ... 7 8 Steps ... 7 9 Result expression ... 9 10 Precision ... 9 11 Test report ... 9 Appendix A ... 11 Appendix B ... 12 Appendix C ... 14 Appendix D ... 15 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 ScopeThis 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 referencesFor 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 definitionsTerms and definitions defined in GB/T 2035 apply to this document.4 PrinciplesDISSOLVE/SWELL PVC sample into N, N'-dimethylacetamide solvent, USE headspace gas-liquid chromatography to determine vinyl chloride content in the sample.5 InstrumentsGeneral laboratory instruments and the following equipment. 5.1 Gas chromatography (GC). 5.2 Hydrogen flame ionization detector (FID). 5.3 GC column, the column shall be able to completely separate vinyl chloride from impurities in the sample. The signal obtained from 0.01 mg/L of vinyl chloride solution shall be at least three times of the baseline noise. Examples of suitable chromatography column refer to Table A.1 of Appendix A. Other equivalent chromatography column may also be chosen. 5.4 Data processing system, it is used for collecting data and processing gas chromatography signal. 5.5 Thermostat, it can control at (70±1) ºC. 5.6 Glass bottles, the volume is 30 mL, with silicone septa and metal screw sealing cap. 5.7 Glass bottles, common volume is (22.5±0.5) mL, with silicone septa and metal screw sealing cap. 5.8 Glass pipettes, the volumes are 25 mL and 10 mL. 5.9 Micro syringes, the volumes are 500μL 100μL, or other suitable volume. 5.10 Glass gas-tight syringe, the volume is 10 mL, or other suitable volume. 5.11 Balance, accurate to 0.1 mg. 5.12 Balance, accurate to 0.01 g.6 Reagents and materialsReagents used are of analytical grade. 6.1 Vinyl chloride, purity is greater than 99.5%. Gas cylinders of vinyl chloride shall be with syringe adapter. b) The integral identification of the sample; c) The single measured values and their arithmetic mean; d) The difference with this Standard; e) Testing personnel and date, etc. equilibrium after more than 30 min of thermostat, with accurate result, and improving detection efficiencyAppendix AMODIFY the contents in Appendix A of ISO 6401.2008 PROVID an appropriate gas- chromatography column and corresponding chromatographic conditions. It is suitable for China’s conditionsAppendix BHeadspace injection’s parameters in 8.2 and 8.3 of ISO 6401.2008 8.2 are integrated into Appendix B According to the standard’s needs ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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