GB/T 35492-2017 English PDF

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GB/T 35492-2017: Determination of organotin content of latex products -- GC-MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35492-2017	279	Add to Cart	3 days	Determination of organotin content of latex products -- GC-MS method	Valid

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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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