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SN/T 3938-2014 English PDF

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SN/T 3938-2014: Food contact materials. Polymers. Determination of organotin compounds. Gas chromatography-mass spectrometry
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SN/T 3938-2014English289 Add to Cart 3 days [Need to translate] Food contact materials. Polymers. Determination of organotin compounds. Gas chromatography-mass spectrometry Valid SN/T 3938-2014

PDF similar to SN/T 3938-2014


Standard similar to SN/T 3938-2014

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Basic data

Standard ID SN/T 3938-2014 (SN/T3938-2014)
Description (Translated English) Food contact materials. Polymers. Determination of organotin compounds. Gas chromatography-mass spectrometry
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X08
Classification of International Standard 67.250
Word Count Estimation 11,134
Date of Issue 4/9/2014
Date of Implementation 11/1/2014
Quoted Standard GB/T 6682
Regulation (derived from) State inspection certification (2014) 210
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the gas chromatography - mass spectrometry detection of dibutyl tin dichloride, tributyltin chloride, dioctyl tin dichloride, triphenyl tin chloride content approach. This standard applies to plastic food contact materials dibutyl

SN/T 3938-2014: Food contact materials. Polymers. Determination of organotin compounds. Gas chromatography-mass spectrometry


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Food contact materials. Polymers. Determination of organotin compounds. Gas chromatography-mass spectrometry People's Republic of China Entry-Exit Inspection and Quarantine Standards Food contact materials - Polymer - Determination of organotin Gas chromatography - mass spectrometry 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 was drafted. People's Republic of China Zhejiang Exit Inspection and Quarantine. The main drafters of this standard. ZHANG MENGMENG at Tianxiang, Liu Cuiping, Chen Jianwei, Xiqi Hui, Wang Danli, Wanghan Ying. Food contact materials - Polymer - Determination of organotin Gas chromatography - mass spectrometry

1 Scope

This standard specifies the gas chromatography - mass spectrometry detection of dibutyl tin dichloride, tributyltin chloride, dioctyl tin dichloride, triphenyl Chlorination of tin content. This standard applies to plastic food contact materials dibutyl tin dichloride, tributyltin chloride, dioctyl tin dichloride, triphenyltetrazolium chloride Determination of tin content.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)

3 Method summary

After the sample was extracted with n-hexane, the test solution at pH = 4.5 ± 0.1 acidity to tetraethyl borohydride as derivatization reagent derivatized, By gas chromatography - mass spectrometry (GC-MS), external standard.

4 Reagents and materials

All reagents unless otherwise specified, were of analytical grade and water for the two water GB/T 6682 regulations. Tetraethylammonium borohydride, 4.1. greater than 98% purity. 4.2 Sodium acetate. AR. 4.3 THF. AR. 4.4 hexane. chromatographically pure. 4.5 glacial acetic acid. AR. 4.6 1mol/L acetate buffer. Take 82g sodium acetate (4.2) was added to 800mL of water was added to 35mL of glacial acetic acid, then glacial acetic acid (4.5) was adjusted to pH = 4.5 ± 0.1, the final water volume to 1000mL. 4.7 Derivatization reagent. Weigh 0.5g of tetraethyl borohydride (4.1) in 10mL brown volumetric flask, dissolved in tetrahydrofuran (4.3), set the volume To the mark. NOTE. This solution is unstable, now with the current. Flammable solid state, cut off from air when formulated as possible. 4.8 Standard. dibutyl tin dichloride, CAS No. 683-18-1, molecular weight of 303.85 and a purity of greater than or equal to 97%. 4.9 Standard. tributyltin chloride, CAS No. 1461-22-9, relative molecular mass of 325.49, purity of greater than or equal to 96%. 4.10 Standard. dioctyl tin dichloride, CAS No. 3542-36-7, relative molecular mass of 416.06, purity of greater than or equal to 97%. 4.11 Standard. triphenyltin, CAS No. 639-58-7, molecular weight of 385.46 and a purity greater than or equal to 98%. 4.12 mixed standard stock solution. Weigh dibutyl tin dichloride, tributyltin chloride, dioctyl tin dichloride, triphenyltin each standard

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