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SN/T 3940-2014 PDF English

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SN/T 3940-2014: Food contact materials - Wood - Dertermination of 2, 4, 6-chloroanisole and 2, 4, 6-tribromoanisole in cork - Gas chromatography-mass spectrometry method
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SN/T 3940-2014English209 Add to Cart 3 days [Need to translate] Food contact materials - Wood - Dertermination of 2, 4, 6-chloroanisole and 2, 4, 6-tribromoanisole in cork - Gas chromatography-mass spectrometry method

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Basic data

Standard ID SN/T 3940-2014 (SN/T3940-2014)
Description (Translated English) Food contact materials - Wood - Dertermination of 2, 4, 6-chloroanisole and 2, 4, 6-tribromoanisole in cork - Gas chromatography-mass spectrometry method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X08
Classification of International Standard 67.250
Word Count Estimation 8,897
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 cork in 2, 4, 6-trichloro-2, 4, 6-bromoanisole anisole and gas chromatography - mass spectrometry method. This standard applies to the determination of food contact materials made of cork 2, 4, 6 and 2, 4, 6-trichloroanisole br

SN/T 3940-2014: Food contact materials - Wood - Dertermination of 2, 4, 6-chloroanisole and 2, 4, 6-tribromoanisole in cork - Gas chromatography-mass spectrometry 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 food contact materials wood and cork in three bromoanisole Trichloroanisole gas chromatography - mass spectrometry) People's Republic of China Entry-Exit Inspection and Quarantine Standards Food contact materials - wood cork Determination trichloroanisole and three-bromoanisole 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 Fujian Exit Inspection and Quarantine. The main drafters of this standard. Tang Xi, Lin Hua, Tang Hong, Jiang Xiaoli, Liang Ming, Li Xiaojing, Chen Jiamin. Food contact materials - wood cork Determination trichloroanisole and three-bromoanisole Gas chromatography - mass spectrometry

1 Scope

This standard specifies the cork in 2,4,6-trichloro-2,4,6-bromoanisole anisole and gas chromatography - mass spectrometry method. This standard applies to the determination of food contact materials made of cork 2,4,6 and 2,4,6-trichloroanisole bromoanisole.

2 Method summary

The samples were methanol extraction, the extract was N- secondary amine (PSA) solid phase extraction (SPE), gas chromatography - mass Determination spectrometer (GC-MS) and validation, external standard.

3 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade. 3.1 methanol. 3.2 2,4,6-trichloroanisole standards. CAS No. 87-40-1, purity of greater than or equal to 99.0%. 3.3 2,4,6-bromoanisole standards. CAS No. 607-99-8, purity of greater than or equal to 99.0%. 3.4 standard stock solution. Weigh accurately respectively 2,4,6-trichloro anisole (3.2) and 2,4,6-bromoanisole standards (3.3) (accurate to 0.1mg), dissolved in methanol to prepare a concentration of 1000mg/L of standard stock solution. 3.5 Standard working solution. draw the appropriate amount of 2,4,6 and 2,4,6-trichloroanisole bromoanisole standard stock solution (3.4), diluted with methanol Release to a concentration of 0.01mg/L, 0.05mg/L, 0.10mg/L, 0.15mg/L, 0.20mg/L of standard working solution. 3.6 SPE. N- secondary amine (PSA), (1g/6mL) or equivalent person.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry. with electron impact ionization (EI). 4.2 Electronic balance. a sense of the amount of 0.1mg and 1mg. 4.3 ultrasonic generator. power 500W. 4.4 nitrogen blowing instrument.

5 Sample Preparation

Take a representative sample of 10g, which is made of particle size of about 5mm, and mix. Step 6 Analysis 6.1 Extraction Weigh 1g ~ 2g sample, accurate to 1mg. It will be referred to a good sample into stoppered Erlenmeyer flask. With 20mL of methanol, ultrasonic extraction ...

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