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Determination of halfenprox residues in food for import and export
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SN/T 2431-2010
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Basic data | Standard ID | SN/T 2431-2010 (SN/T2431-2010) | | Description (Translated English) | Determination of halfenprox residues in food for import and export | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X04 | | Classification of International Standard | 67.050 | | Word Count Estimation | 23,231 | | 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 benzyl ether mite residues detected by gas chromatography and gas chromatography mass spectrometry confirmatory method. This standard applies to asparagus, potatoes, onions, pears, peaches, corn, buckwheat, tea, vinegar, honey, walnuts, rabbit, chicken, shrimp, chicken mite benzyl ether residue testing. | SN/T 2431-2010: Determination of halfenprox residues in food for import and export---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 halfenprox residues in food for import and export
Exit inspection and quarantine industry standard book People's Republic of China
Detection mite ether residues in imported and exported food benzyl
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
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. Shanxi People's Republic of China Exit Inspection and Quarantine.
The main drafters of this standard. Xue Ping, Du Lijun, Yuan Li, Wu Haijun, Zhang Xiaofeng, Pan Yali.
Detection mite ether residues in imported and exported food benzyl
1 Scope
This standard specifies the gas chromatography and gas chromatography imported and exported food mite benzyl ether Residues - Mass validated method.
This standard applies to asparagus, potatoes, onions, pears, peaches, corn, buckwheat, tea, vinegar, honey, walnuts, rabbit, chicken, shrimp, chicken in
Benzyl ethers mite residues detected.
2 Method summary
Vinegar and honey dissolved in water and diluted solid phase extraction; onions and tea with ethyl acetate - cyclohexane extraction solid phase extraction; animal
Derived foods and foods high oil content extracted with acetonitrile, ethyl acetate and other foods - cyclohexane mixed extraction solvent extracts by gel color
Spectrometer (GPC) purification for gas chromatography with electron capture detector, external standard, positive samples by gas chromatography - mass spectrometry
Confirmed.
3 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade, double distilled water.
3.1 ethyl acetate. chromatography.
3.2 Cyclohexane. chromatography.
3.3 acetonitrile. chromatography.
3.4 hexane. chromatographically pure.
3.5 acetone. chromatography.
3.6 anhydrous sodium. 650 ℃ burning 4h, stored in a sealed container in the back.
3.7 sodium chloride.
3.8 ethyl acetate - cyclohexane solvent mixture (1 + 1, volume ratio). amount of 500mL ethyl acetate and 500mL of cyclohexane, and mix.
3.9 hexane - acetone mixed solvent (9 + 1, volume ratio). amount of 90mL and 10mL of n-hexane, acetone, and mix.
3.10 cyclohexane - ethyl acetate solvent mixture (6 + 1, by volume). the amount of 10mL ethyl acetate and 60mL of cyclohexane, and mix.
3.11 Benzyl Ether mites standard substance. (halfenprox; CAS Number. 111872-58-3; C24H23BrF2O3; molecular weight. 477.34)
A purity of not less than 99%.
3.12 Standard stock solution (100mg/L). accurately weighed amount of reference material, dissolved in ethyl acetate to prepare a concentration of 100mg/L of
Standard stock solution, the solution was stored at 0 ℃ ~ 4 ℃ refrigerator.
3.13 standard working solution. diluted with ethyl acetate needed to apply the standard working solution concentration. Standard working solution should now use the existing.
3.14 graphitized carbon black and PSA mixing column. 1mL, 50mg graphitized carbon black + 50mgPSA, with 3mL cyclohexane - ethyl acetate mixture
Co-solvent (3.10) activation.
3.15 HLB solid phase extraction column. 3mL, 60mg, or rather who, washed with 2mL hexane - acetone mixed solution (3.9), 2mL propionate
Ketones, 5mL distilled water pre-rinse.
The organic phase was 3.16 membrane. 0.45μm.
4 instruments and equipment
4.1 Gas chromatograph equipped with electron capture detector.
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