SN/T 1742-2006 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1742-2006	599	Add to Cart	3 days	Determination of difenzoquat residues in foods for import and export. Gas chromatography mass spectrometry method	Obsolete

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Basic data

Standard ID: SN/T 1742-2006 (SN/T1742-2006)
Description (Translated English): Determination of difenzoquat residues in foods for import and export. Gas chromatography mass spectrometry method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: C53
Word Count Estimation: 15,170
Date of Issue: 2006-01-26
Date of Implementation: 2006-08-16
Regulation (derived from): Industry Standard Notice 2006 No. 4 (total of 76)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the import and export food oats dry residue gas chromatography mass spectrometry tandem mass spectrometry detection method. This standard applies to imports of wheat, corn, pork, beef, oats, dry floor two parameter determination and confirmation.

SN/T 1742-2006: Determination of difenzoquat residues in foods for import and export. 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 difenzoquat residues in foods for import and export.Gas chromatography mass spectrometry method People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Method for detecting residual amount of oats in imported and exported foods Gas chromatography tandem mass spectrometry Released on.2006-01-26 Implementation of.2006-08-16 People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

Appendix A and Appendix B of this standard are informative annexes. This standard is proposed and managed by the National Certification and Accreditation Supervision Committee. This standard was drafted. Jilin Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Wang Mingtai, Yan Jun, Zhao Qingsong, Wang Lijie, Zhang Daihui, Park Zhe. This standard is the first industry standard for entry-exit inspection and quarantine. Method for detecting residual amount of oats in imported and exported foods Gas chromatography tandem mass spectrometry

1 Scope

This standard specifies the gas chromatography tandem mass spectrometry method for the determination of oat residue in imported and exported foods. This standard applies to the determination and confirmation of the residual amount of oats in wheat, corn, pork and beef.

2 Principle

The sample is extracted by shaking with water-acetone, and is liquid-liquid partitioned in dichloromethane, purified by a gel column, and purified by a Florisil solid phase column. After the eluate is concentrated and dissolved to a constant volume, it is detected by gas chromatography-mass spectrometry and quantified by external standard method.

3 reagents and materials

Unless otherwise specified, the reagents used were of analytical grade and the water was double distilled water. 3.1 Acetone. 3.2 Dichloromethane. 3.3 cyclohexane. 3.4 Ethyl acetate. 3.5 n-hexane. 3.6 anhydrous sodium sulfate. 650 ° C burning for 4h, stored in a sealed container for use. 3.7 Aqueous sodium sulfate solution. 20g/L. 3.8 Fluoril-silica solid phase extraction column. 1.0 g, or equivalent. 3.9 Oatmeal Standard (Difenzoquat, C18H20N2O4S, CAS. 43222-48-6). purity is ≥99%. 3.10 Standard stock solution. Accurately weigh the appropriate amount of oatmeal standard and prepare a standard reserve of 100μg/mL with acetone. Solution. 3.11 Standard working solution. Dilute with acetone to a standard working solution of the applicable concentration as needed.

4 Instruments and equipment

4.1 Sample preparation tools 4.1.1 Grinder. 4.1.2 Crusher. 4.1.3 Sieve. 2.0mm round sieve. 4.1.4 Sample plate. 4.1.5 Sample bottle. with a jar. 4.2 Analytical instruments 4.2.1 Gas Chromatography-Mass Spectrometer. equipped with a mass selective detector. 4.2.2 Gel Chromatograph. equipped with a unit pump and a fraction collector. 4.2.3 Oscillator. 4.2.4 Rotate the evaporator. 4.2.5 Anhydrous sodium sulfate column. 7.5 cm × 1.5 cm (inner diameter), containing 5 cm of anhydrous sodium sulfate. ......

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