SN/T 3918-2014 English PDF

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SN/T 3918-2014: Determination of polychlorinated terphenyls in plastics and plastic products. Gas Chromatograph method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 3918-2014	209	Add to Cart	3 days	Determination of polychlorinated terphenyls in plastics and plastic products. Gas Chromatograph method	Valid

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Basic data

Standard ID: SN/T 3918-2014 (SN/T3918-2014)
Description (Translated English): Determination of polychlorinated terphenyls in plastics and plastic products. Gas Chromatograph method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: G31
Classification of International Standard: 83.080
Word Count Estimation: 8,872
Date of Issue: 4/9/2014
Date of Implementation: 11/1/2014
Regulation (derived from): State inspection certification (2014) 210
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the gas chromatographic method and plastic products of PCTs. This standard applies to plastic products and PCTs determination.

SN/T 3918-2014: Determination of polychlorinated terphenyls in plastics and plastic products. Gas Chromatograph 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 polychlorinated terphenyls in plastics and plastic products. Gas Chromatograph method People's Republic of China Entry-Exit Inspection and Quarantine Standards Plastic products and PCTs determination Gas chromatography Issued on. 2014-04-09 2014-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard is drafted by. People's Republic of China Fujian Exit Inspection and Quarantine. The main drafters of this standard. Liang Zhen, Jiang Xiaoli Tang Xi, Liang Ming, Tang Hong, Chen Jiamin. Plastic products and PCTs determination Gas chromatography

1 Scope

This standard specifies the gas chromatographic method and plastic products of PCTs. This standard applies to plastic products and PCTs determination.

2 Terms and definitions

The following terms and definitions apply to this document. 2.1 PCTs Polychlorinatedterphenyls (PCTs) PCTs (PCTs) has three benzene structure, depending on the number of chlorine atoms substituted on the phenyl ring and the position can be attached up 14 chlorine atoms, PCTs theoretically has a huge number of isomers, but the actual application, there was no single form before, the main To appear in several commodity mix recipes, such as aroclor5442, aroclor5460. PCTs structural formula is as follows.

3 Method summary

After sample extraction, solvent extraction liquid conversion, enrichment, after purification by silica gel column concentrated small volume by gas chromatography - ECD were measured using the internal standard relative retention time than the qualitative and quantitative internal standard.

4 Reagents and materials

4.1 hexane. chromatographically pure. 4.2 acetone. AR. 4.3 n-heptane. chromatography. 4.4 acetone-hexane (32). 4.5 methanol. AR. Over 4.6 PCTs standard substance. the commercialization of mixed standard substance aroclor5460, purity greater than or equal to 99.5%. Over 4.7 PCTs preparation of standard solution A. accurately weighed amount PCTs standard substance was dissolved and diluted with n-heptane (4.3) with Standard solution prepared at the desired concentration. 4.8 PCBs PCB-29 reference standard substance. purity of greater than or equal to 99.5%. 4.9 PCBs PCB-209 internal standard substance. purity of greater than or equal to 99.5%. 4.10 PCBs PCB-29, PCB-209 standard solution. namely, accurately weighed amount of PCBs and PCB-29 PCB-209 standard ......

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