SN/T 1947-2007 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1947-2007	719	Add to Cart	5 days	Determination of fluroxypyr residues in foods for import and export. GC-MS method	Obsolete

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Basic data

Standard ID: SN/T 1947-2007 (SN/T1947-2007)
Description (Translated English): Determination of fluroxypyr residues in foods for import and export. GC-MS method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 18,172
Date of Issue: 2007-08-06
Date of Implementation: 2008-03-01
Regulation (derived from): National-accreditation-Science [2011] 63
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the fluorine grass and food residues by gas chromatography mass spectrometry. This standard applies to citrus, apples, spinach, cabbage, corn, rice, beef liver, chicken kidney fluorine grass and residues and confirmation.

SN/T 1947-2007: Determination of fluroxypyr residues in foods for import and export. GC-MS method

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Determination of fluroxypyr residues in foods for import and export.GC-MS method Exit inspection and quarantine industry standard book People's Republic of China Imported and exported food fluroxypyr given detection method Residues Gas chromatography - mass spectrometry Posted 2007-08-06 2008-03-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

The Standard Appendix A, Appendix B are informative appendices. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. Jilin People's Republic of China Exit Inspection and Quarantine, People's Republic of China Yunnan Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Wang Mingtai, Mou Jun, Ma Xiaogang, Song Liguo, Zhou Xiao, Li Aijun, Tung Wah Chang, Lo Chunmei. This standard is the first release of the entry-exit inspection and quarantine industry standards. Imported and exported food fluroxypyr given detection method Residues Gas chromatography - mass spectrometry

1 Scope

This standard specifies the foods given fluoride grass residues by gas chromatography - mass spectrometry method. This standard applies to citrus, apples, spinach, cabbage, corn, rice, beef liver, chicken kidney fluroxypyr given the determination and confirmation of residues.

2 Method summary

Sample extracted with ethyl acetate gel column purification, and then by fluorine Rory silica (Florisil) solid-phase column purification, after esterification derived for Gas chromatography - mass spectrometry detection, external standard.

3 Reagents and materials

Unless otherwise specified, the reagents were of analytical grade, double distilled water. 3.1 methanol (residual level). 3.2 Cyclohexane (residual level). 3.3 ethyl acetate (residual level). 3.4 hexane (residual level). 3.5 Concentrated sulfuric acid (superior grade). 3.6 anhydrous sodium. 650 ℃ burning 4h, stored in a sealed desiccator. 3.7 sulfate solution. 2%. 3.8 fluroxypyr set standards (fluroxypyr, C7H5C12FN2O3, CAS.No.69377-81-7). purity greater than or equal to 98%. 3.9 standard stock solution. accurately weigh the right amount of fluoride grass set standards, formulated with acetone to a concentration of 100μg/mL standard stock solution liquid. The solution was stored at 0 ℃ ~ 4 ℃ refrigerator. 3.10 standard solution. n-hexane and then diluted to a concentration suitable for standard working solution as needed. The solution in the refrigerator 0 ℃ ~ 4 ℃ Saved. 3.11 Florisil SPE column. Florisil, 500mg, 6mL, or equivalent person.

4 instruments and equipment

4.1 Gas chromatography - mass spectrometry. source with electron impact (EI). 4.2 gel chromatography. with a pump unit and a fraction collector. 4.3 homogenizer. 4.4 rotary evaporator. 4.5 plug conical bottle. 250mL. 4.6 concentrated bottle. 50mL, 250mL. 4.7 centrifuge.

5 Sample Preparation and Storage

5.1 Sample Preparation 5.1.1 citrus, apples, spinach, cabbage Take representative samples of about 500g, which the edible portion (not available with water) chopped, with a stamp mill to sample processed into a paste, mix, ......

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