SN/T 1117-2008 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1117-2008	719	Add to Cart	3 days	Determination of multiple pyrethroid residues in food for import and export. Gas chromatography method	Obsolete
SN/T 1117-2002	599	Add to Cart	4 days	Method for the determination of multiple pyrethroid residues in tea for import and export	Obsolete

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Basic data

Standard ID: SN/T 1117-2008 (SN/T1117-2008)
Description (Translated English): Determination of multiple pyrethroid residues in food for import and export. Gas chromatography method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X04
Word Count Estimation: 18,166
Date of Issue: 2008-04-29
Date of Implementation: 2008-11-01
Older Standard (superseded by this standard): SN/T 1117-2002
Regulation (derived from): Industry standard filing Notice 2008 No. 7
Issuing agency(ies): General Administration of Customs
Summary: This standard provides a variety of foods pyrethroid pesticide residues by gas chromatographic method. This standard applies to rice, tea, vegetables, cucumber, peas, citrus bifenthrin, fenpropathrin, cyhalothrin, permethrin, cyfluthrin, cypermethrin, fenvalerate, deltamethrin pesticide residues.

SN/T 1117-2008: Determination of multiple pyrethroid residues in food for import and export. Gas chromatography 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 multiple pyrethroid residues in food for import and export. Gas chromatography method Exit inspection and quarantine industry standard book People's Republic of China Instead of the SN/T 1117-2002 A variety of imported and exported food pyrethroid pesticide residues Determination by gas chromatography Posted 2008-04-29 2008-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

Instead of the standard SN/T 1117-2002 "pesticide residues in tea import and export inspection method pyrethriod." This standard compared with SN/T 1117-2002 The main changes are as follows. Name --- standard has been modified; --- Standard Scope extended to the tea from the tea, grains, vegetables, fruits; --- Increased the determination of the content of cyfluthrin, can a determination of pyrethroid pesticide residues; --- Omitted sampling procedure. Appendix A of this standard is a normative appendix, Appendix B is an informative annex. 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. Ding Huiying, Xie, Jiang Xiaoying, Wu Juan, Zhu Yinhuan, Yao Liang. This standard replaces the standards previously issued as follows. --- SN/T 1117-2002. A variety of imported and exported food pyrethroid pesticide residues Determination by gas chromatography

1 Scope

This standard specifies the gas chromatographic method in food variety pyrethroid pesticide residues. This standard applies to rice, tea, vegetables, cucumber, peas, citrus bifenthrin, fenpropathrin, cyhalothrin, permethrin, Cyfluthrin, cypermethrin, fenvalerate, deltamethrin pesticide residues determination.

2 Method summary

In a sample of pyrethroid pesticide residues were extracted with hexane - acetone (1 + 1) was extracted supernatant after centrifugation was concentrated and treated with Florisil column Purification, gas chromatography, external standard.

3 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade, water is distilled or deionized water. 3.1 ether. HPLC fractions. 3.2 hexane. HPLC fractions. 3.3 acetone. HPLC fractions. 3.4 sodium chloride. 3.5 anhydrous sodium. 650 ℃ burning 4h, cooled in a desiccator to room temperature and stored in a sealed bottle aside. 3.6 Florisil. particle size 0.075μm ~ 0.15μm (100 mesh to 200 mesh). 650 ℃ calcined 4h, 130 ℃ activated before use 4h, Cooled in a desiccator to room temperature, add 1% of water deactivation aside. 3.7 purification column Ⅰ.200mm × 15mm (inner diameter) glass column, the bottom of the cotton pad about 5mm and about 20mm over anhydrous sodium sulfate, 10g Dover Rory silica, plus about 20mm top of anhydrous sodium sulfate, 30mL hexane rinsed before use. 3.8 purification column Ⅱ.200mm × 15mm (inner diameter) glass column, at the bottom of the pad about 5mm and about 20mm cotton anhydrous sodium sulphate, 5g Dover Rory silica, plus about 20mm top of anhydrous sodium sulfate, 30mL hexane rinsed before use. 3.9 bifenthrin, fenpropathrin, cyhalothrin, permethrin, cyfluthrin, cypermethrin, fenvalerate, deltamethrin standard materials. Purity of greater than or equal to 99%, see Appendix A. 3.10 bifenthrin, fenpropathrin, cyhalothrin, permethrin, cyfluthrin, cypermethrin, fenvalerate, deltamethrin standard reserve Solution. were accurately weighed amount of standard, dubbed the concentration of n-hexane as the standard stock solution 100μg/mL of. Needed with n-hexane Diluted to the appropriate concentration of the mixed working standard solutions. Standard stock solution at 0 ℃ ~ 4 ℃ stored in a refrigerator for a period of 12 months, mixed Standard working solution at 0 ℃ ~ 4 ℃ stored in a refrigerator for a period of six months.

4 instruments and equipment

4.1 Gas chromatograph. measuring device with electron capture (ECD). 4.2 vortex mixer. 4.3 centrifuge. speed is greater than 5000r/min. 4.4 nitrogen blowing concentrators. ......

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