SN/T 1737.5-2010 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1737.5-2010	RFQ	ASK	5 days	Determination of herbicide residues. Part 5: Determination of thiocarbmate herbicide residues in foodstuffs for import and export-by LC-MS/MS	Obsolete

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Basic data

Standard ID: SN/T 1737.5-2010 (SN/T1737.5-2010)
Description (Translated English): Determination of herbicide residues. Part 5: Determination of thiocarbmate herbicide residues in foodstuffs for import and export-by LC-MS/MS
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: B17
Classification of International Standard: 65.100
Word Count Estimation: 27,246
Date of Issue: 2010-01-10
Date of Implementation: 2010-07-16
Regulation (derived from): National Quality Inspection (2010) No. 13
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the import and export food Molinate, g grass enemy, herbicides enemy Triallate, oats enemy, grasses Dan lenacil enemy, Yin grass and gerbera enemy enemy liquid chromatography mass spectrometry/mass spectrometry Methods. This standard applies to rice, beans, radish, cabbage, broccoli, ginger, tea, peanuts, oranges, grapes, chicken, chicken liver and fish Molinate, g grass enemy, herbicides enemy Triallate, oats enemy, grasses Dan lenacil enemy, the enemy Yin grass and gerbera enemy residues detection and confirmation.

SN/T 1737.5-2010: Determination of herbicide residues. Part 5: Determination of thiocarbmate herbicide residues in foodstuffs for import and export-by LC-MS/MS

---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 herbicide residues.Part 5. Determination of thiocarbmate herbicide residues in foodstuffs for import and export-by LC-MS/MS Exit inspection and quarantine industry standard book People's Republic of China Herbicide residues in Part 5. Liquid chromatography - mass spectrometry/mass spectrometry Determination of imported and exported food thiocarbamates Herbicide Residues Issued on. 2010-01-10 2010-07-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 1737 "herbicide residues method" is divided into five parts. --- Part 1. Gas chromatography-tandem mass spectrometry Cereals and oilseeds amide herbicide residues in; --- Part 2. Determination of Cereals and oilseeds in biphenyl ether herbicides by gas chromatography/mass spectrometry; --- Part 3. Liquid chromatography - mass spectrometry/mass spectrometry cyclohexenone herbicide residues in imported and exported food ring; --- Part 4. Liquid chromatography - mass spectrometry/mass spectrometry oxygen phenoxy acid herbicides residues in imported and exported food aryl; --- Part 5. Liquid chromatography - mass spectrometry/mass spectrometry thiocarbamate herbicide residues in imported and exported food. This section SN/T 1737 Part 5. This section of the Appendix A, Appendix B and Appendix C are informative appendices. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section is drafted. Shenzhen Inspection and Quarantine Science Research Institute, Shenzhen People's Republic of China Exit Inspection and Quarantine. The main drafters of this section. Chen Jincan, guaria, Lu Jing Zhang, Xiao Long to bear babe, Bo. Herbicide residues in Part 5. Liquid chromatography - mass spectrometry/mass spectrometry Determination of imported and exported food thiocarbamates Herbicide Residues

1 Scope

SN/T 1737 provisions of this part of the imported and exported food molinate, g grass the enemy, the enemy herbicides, triallate, oat enemy, Dan grass, grass ring Liquid enemy, the enemy Yin grass and gerbera enemy chromatography - mass spectrometry/mass spectrometry. This section applies to rice, beans, radish, cabbage, broccoli, ginger, tea, peanuts, oranges, grapes, chicken, fish and chicken liver Molinate, g grass the enemy, the enemy herbicides, triallate, oat enemy, Dan grass, grass ring the enemy, the enemy Yin grass and gerbera enemy residues detected and confirmed.

2 Method summary

The sample was extracted with acetonitrile thiocarbamate herbicide residues, extract by HLB and Envi-Carb SPE net Of liquid chromatography - mass spectrometry/mass spectrometry and validation, internal standard.

3 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade, water is deionized water. 3.1 acetonitrile. high performance liquid chromatography. 3.2 n-hexane. 3.3 acetone. 3.4 acetic acid. high performance liquid chromatography. 3.5 sodium chloride. 3.6 n-hexane - acetone solution (7 + 3, volume ratio). 3.7 acetonitrile - water (1 + 1, volume ratio). 3.8 Standard substance. Refer to Appendix A, Table A. 1, greater than 99% purity. 3.9 internal standard reference material. D3- carbaryl, 100μg/mL. 3.10 standard stock solution. 100μg/mL. Accurately weighed amount of various thiocarbamate standard substance (3.8) with acetonitrile (3.1) Preparation of a concentration of 100mg/L of standard stock solution, dark -18 ℃ preservation. 3.11 intermediate mixed standard solution. 1.0μg/mL. Each draw an appropriate amount of standard stock solution (3.10), diluted with acetonitrile to 1.0mg/L The mixed standard working solution, dark -18 ℃ preservation. 3.12 internal standard intermediate solution. 1.0μg/mL. Imbibe a suitable amount of internal standard substance (3.9) with acetonitrile preparation of a concentration 1.0mg/L of internal standard working solution, dark -18 ℃ preservation. 3.13 matrix mixed standard working solution. draw an appropriate amount of the intermediate mixed standard solution (3.11) in the middle and the internal standard solution (3.12), with a blank The extract was formulated product concentration 0μg/L, 1.0μg/L, 5.0μg/L, 10.0μg/L, 20.0μg/L, 40.0μg/L, 100μg L substrate / Quality mixed standard working solution of the internal standard concentration was 20.0μg/L. Day of preparation. 3.14 HLB solid phase extraction column or an equivalent person.200mg, 6mL. Pre-treated with acetonitrile with 5mL, kept moist cylinder. 3.15 Envi-Carb solid phase extraction column or an equivalent person.200mg, 3mL. (3.6) deal with acetone, maintaining - before use with 5mL n-hexane Cylinder moist. 3.16 microporous membrane. 0.22μm, the organic phase type. ......

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