Path: Home > SN/T > Page19 > SN/T 4765-2017

Price & Delivery

US$139.00 · In stock · Download in 9 seconds
SN/T 4765-2017: Food contact materials - Polymers - Determination of hexachloro-1, 3-butadiene - Gas chromatography-mass spectrometry
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure
Status: Valid

Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
SN/T 4765-2017	English	139	Add to Cart	3 days [Need to translate]	Food contact materials - Polymers - Determination of hexachloro-1, 3-butadiene - Gas chromatography-mass spectrometry

SN/T 4765-2017: Food contact materials - Polymers - Determination of hexachloro-1, 3-butadiene - 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.
Food contact materials - Polymers - Determination of hexachloro-1, 3-butadiene - Gas chromatography-mass spectrometry People's Republic of China entry and exit inspection and quarantine industry standards Food contact material Hexachloro-1,3-butyl in polymer materials Determination of diene by gas chromatography-mass spectrometry Released on.2017-05-12 2017-12-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued Entry-Exit Inspection and Quarantine Industry Standard Food contact material Hexachloro-1,3-butyl in polymer materials Determination of diene by gas chromatography-mass spectrometry China Standard Press Publishing First edition, August.2018

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Guangdong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Fang Xingyou, Shao Qiurong, Lin Hai, Li Ju, Duan Bing, Li Yunsong, Ding Xiao, Zhou Minghui, Li Quanzhong. Food contact material Hexachloro-1,3-butyl in polymer materials Determination of diene by gas chromatography-mass spectrometry

1 Scope

This standard specifies the method for the determination of hexachloro-1,3-butadiene in polymer materials for food contact materials by gas chromatography-mass spectrometry. This standard applies to the determination of hexachloro-1,3-butadiene content in PP, PE, silicone rubber and rubber.

2 Method summary

The hexachloro-1,3-butadiene in the sample was extracted with methylene chloride in an ultrasonic bath, and the sample was concentrated by gas chromatography-mass spectrometry. The test is performed, and the whole scan test is used for qualitative determination, and the selected ion is used for external standard method for quantification.

3 reagents and materials

Unless otherwise stated, the reagents used were homogeneously analyzed for pure or higher purity reagents. 3.1 Dichloromethane. chromatographically pure. 3.2 Hexachloro-1,3-butadiene (CAS No.. 87-68-3). purity ≥ 99%. 3.3 Standard stock solution. accurately weigh the appropriate amount of hexachloro-1,3-butadiene standard, and prepare the concentration with dichloromethane (3.1). A standard stock solution of 1000 mg/L is contained in a brown bottle. 3.4 Standard working solution. Accurately absorb the standard stock solution of hexachloro-1,3-butadiene and dilute it with dichloromethane to a concentration of Working solutions of 0.25 mg/L, 0.5 mg/L, 1.0 mg/L, 2.5 mg/L, 5.0 mg/L, and 10.0 mg/L. 3.5 Filter paper. medium speed quantitative filter paper. 3.6 Microporous membrane. 0.45 μm, organic phase.

4 Instruments and equipment

4.1 Gas Chromatography-Mass Spectrometer. equipped with an EI source. 4.2 Analytical balance. Sensitivity 0.1mg. 4.3 Ultrasonic instrument. 4.4 Rotate the evaporator. 4.5 Liquid nitrogen tank. 4.6 Shredder. ...