GB/T 33344-2016 English PDF

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GB/T 33344-2016: Determination of 2, 4-dinitro-toluene in electrical and electronic products -- Gas chromatography-mass spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 33344-2016	199	Add to Cart	3 days	Determination of 2, 4-dinitro-toluene in electrical and electronic products -- Gas chromatography-mass spectrometry	Valid

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Basic data

Standard ID: GB/T 33344-2016 (GB/T33344-2016)
Description (Translated English): Determination of 2, 4-dinitro-toluene in electrical and electronic products -- Gas chromatography-mass spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: L10
Classification of International Standard: 31.020
Word Count Estimation: 10,176
Date of Issue: 2016-12-13
Date of Implementation: 2017-07-01
Regulation (derived from): National Standard Notice No.299 of 2016
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 33344-2016: Determination of 2, 4-dinitro-toluene in electrical and electronic products -- Gas chromatography-mass spectrometry

---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 2, 4-dinitro-toluene in electrical and electronic products - Gas chromatography-mass spectrometry ICS 31.020 L10 National Standards of People's Republic of China Determination of 2,4 - dinitrotoluene in electrical and electronic products Gas chromatography - mass spectrometry Determination of2,4-dinitro-tolueneinelectricalandelectronicproducts- 2016-12-13 released 2017-07-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the National Environmental Electronics Standardization Technical Committee (SAC/TC297). The drafting unit of this standard. Shenzhen Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Shenzhen Inspection and Quarantine Science Research Institute, Shenzhen Occupation Institute of Technology, China Institute of Electronic Technology Standardization. The main drafters of this standard. Song Bao Liang, Liu Zhihong, Tong Changfei, Li Yong, Wu Jingwu, Yun Peng, Zou Chunhai, Yu Shuyuan, Li Bin, Cheng Tao, Lin Jialu, Liu Dong, Feng Junli. Determination of 2,4 - dinitrotoluene in electrical and electronic products Gas chromatography - mass spectrometry Caution - Personnel using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible security questions question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.

1 Scope

This standard specifies the content of 2,4-dinitrotoluene in electrical and electronic products by gas chromatography-mass spectrometry. This standard applies to the determination of 2,4-dinitrotoluene in electrical and electronic products. The limit of quantification was 50 mg/kg.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Limits of Restricted Substances in Electrical and Electronic Products GB/T

3 principle

After the samples were separated and broken, the mixture was extracted with methylene chloride, and the extract was purified by silica gel solid phase extraction column. Concentrated by gas chromatography - mass spectrometry method, the internal standard method quantitative.

4 Reagent or material

4.1 Carrier gas. helium, purity greater than or equal to 99.999%. 4.2 dichloromethane. chromatography pure. 4.3 2,4-dinitrotoluene standard substance, purity greater than or equal to 99%, or other known purity of the standard material. 4.4 Internal standard. 2,6-dinitrotoluene or isotopes of dinitrotoluene not present in the sample or isotopes of 2,4-dinitrotoluene Deuterium compounds or other compounds that are not present in the test sample, and the compound can be completely separated from the other components on the chromatogram, purity ≥ 99%, or other known purity of the standard material. 4.5 internal standard stock solution. weigh the standard (4.4) 0.25g (accurate to 0.0001g), with dichloromethane (4.2) dissolved, fixed in 250mL Brown capacity bottle. The solution contains 1000 mg/L of the internal standard compound. 4.6 internal standard working solution. accurate removal of 25mL internal standard stock solution (4.5) to 500mL brown volumetric flask, with methylene chloride (4.2) dissolved Solution capacity. The solution contains 50 mg/L of the internal standard compound. 4.7 Standard solution stock solution. Weigh 2,4-dinitrotoluene standard substance (4.3) 0.25g (accurate to 0.0001g) in 250mL brown Volumetric flask, with methylene chloride (4.2) dissolved capacity. The solution contains 2,4-dinitrotoluene 1000 mg/L. 4.8 Standard working solution. 50 μL, 300 μL, 500 μL, 700 μL, 1000 μL of standard solution stock solution (4.7) and 500 μl of the internal standard stock solution (4.5) in a 10 mL brown volumetric flask with dichloromethane (4.2) to a graduated volume as a standard working solution. The Series of solutions containing 50mg/L internal standard compounds and the concentration of 5mg/L, 30mg/L, 50mg/L, 70mg/L, 100mg/L 2,4-dinitrotoluene standard working solution. ......

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