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GB/T 35492-2017: Determination of organotin content of latex products -- GC-MS method
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| GB/T 35492-2017 | English | 279 |
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Determination of organotin content of latex products -- GC-MS method
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GB/T 35492-2017
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Basic data | Standard ID | GB/T 35492-2017 (GB/T35492-2017) | | Description (Translated English) | Determination of organotin content of latex products -- GC-MS method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G40 | | Classification of International Standard | 83.140.01 | | Word Count Estimation | 14,193 | | Date of Issue | 2017-12-29 | | Date of Implementation | 2018-07-01 | | Regulation (derived from) | National Standards Bulletin 2017 No. 32 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 35492-2017: Determination of organotin content of latex products -- GC-MS method---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of organotin content of latex products - GC-MS method
ICS 83.140.01
G40
National Standards of People's Republic of China
Determination of organotin content in latex products
Gas chromatography - mass spectrometry
2017-12-29 Posted
2018-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard proposed by the China Petroleum and Chemical Industry Federation.
This standard by the National Rubber and Rubber Products Standardization Technical Committee (SAC/TC35) centralized.
The main drafting units of this standard. Shanghai Quality Supervision, Inspection Technology Research Institute, Shenzhen Medical Device Testing Center, National Health Planning
Commission of Science and Technology Research Institute, the National Latex Product Quality Supervision and Inspection Center, China Chemical Zhuzhou Rubber Research Institute Co., Ltd., Guangdong Kai
Granville Testing Technology Co., Ltd.
The main drafters of this standard. Liu Jun, left Ying, Jiang Yan, Liu Hongwei, Wang Wei, Peng Jun, Ning Lifeng, Lv Ling, Tan Yunhua, Deng Yizhi, Wang Jinying,
Luo Guilin.
Determination of organotin content in latex products
Gas chromatography - mass spectrometry
Warning --- personnel using this standard should have formal laboratory work experience and obtain the appropriate qualification certificate. This standard does not mean
Out of all possible safety issues, the user is responsible for taking appropriate safety and health measures, and to ensure compliance with relevant state laws and regulations
condition.
1 Scope
This standard specifies the method for the determination of nine organotin compounds in latex products by GC-MS (see Appendix A).
This standard applies to the determination of 9 kinds of organic tin content in latex products.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 6682 analytical laboratory water specifications and test methods
3 principle
After the sample is extracted with acetone, the extract is derivatized with sodium tetraethylborate at an acidity of pH = 4.0 ± 0.1, and the sample solution
Organotin was derivatized. The organotin derivatives were extracted with n-hexane as extractant and determined by gas chromatography-mass spectrometry (GC-MS) and
Confirmation, with external standard method.
4 reagent
Unless otherwise specified, only the use of analytical reagents, test water should be consistent with GB/T 6682 provisions of a water.
4.1 Acetone. Analytical pure.
4.2 n-Hexane. Analytical pure.
4.3 Tetraethyl sodium boride. Content of more than 98%.
4.4 organotin standard purity ≥ 98%, see Appendix A.
4.5 Organic Filter, 0.22 μm, NYLON.
4.6 Acetic acid buffer solution .1mol/L sodium acetate solution, adjusted to pH = 4.0 with glacial acetic acid.
4.7 Anhydrous sodium sulfate Take appropriate amount of anhydrous sodium sulfate (Na2SO4), at 650 ℃ for 4h, cooled and stored in a desiccator for use.
4.8 Tetraethyl sodium borohydride solution, mass fraction 2%, prepared in brown volumetric flask with deionized water, placed in a 4 ℃ refrigerator protected from light.
4.9 Organotin standard stock solution The standard stock solution concentration is based on the organotin cation concentration. Accurately weigh the right amount of organotin standard
After dissolving with a small amount of acetone, dilute to volume in a brown volumetric flask with a mass concentration of 1000 mg/L. Refer to Appendix B for the preparation method. Standard
Quasi-stock solution should be placed in a refrigerator at 4 ℃ protected from light, the use of valid for 6 months.
4.10 organic tin standard working solution. According to the actual sample testing needs, diluted with acetone to a suitable concentration of the mixed standard working solution, the line
Sex range 1mg/L ~ 100mg/L. Standard working solution should be placed in the refrigerator at 4 ℃ dark, the use of valid for 1 month.
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