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| SN/T 1975-2007 | English | 759 |
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Determination of difenoconazole residue in food for import and export. GC-MS method
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SN/T 1975-2007
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Basic data | Standard ID | SN/T 1975-2007 (SN/T1975-2007) | | Description (Translated English) | Determination of difenoconazole residue in food 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 | 19,152 | | 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 food difenoconazole azole sample preparation, gas chromatography mass spectrometry detection and confirmation methods. This standard applies to peas, basil, HU Radka, spinach, rice, soybeans, medicine, tea, almond, grapefruit, pineapple, strawberry, soy sauce, vinegar, honey, royal jelly powder, pork, beef, chicken, eel and the Dragon shrimp and other foods difenoconazole azole residues and confirmation. | SN/T 1975-2007: Determination of difenoconazole residue in food for import and export. GC-MS method
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Determination of difenoconazole residue in food for import and export.GC-MS method
Exit inspection and quarantine industry standard book People's Republic of China
Detection benzene ring yl ether residues in imported and exported food
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 and Appendix B are informative.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Jiangsu Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Shandong Entry-Exit Inspection and Quarantine
Bureau, People's Republic of China Zhejiang Exit Inspection and Quarantine.
Drafters of this standard. Shen Chong Yu, Zhao Yun by Shen Wei Jian, Li Li, Bao Xiaoxia, Li Li flowers, Liu Yan Zhuang pieces soldiers, Yang Wen Quan.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Detection benzene ring yl ether residues in imported and exported food
Gas chromatography - mass spectrometry
1 Scope
This standard specifies the foods benzene ring yl ether of sample preparation, gas chromatography - mass spectrometry detection and confirmation methods.
This standard applies to peas, basil, carrots, spinach, rice, soybeans, medicine, tea, almond, grapefruit, pineapple, strawberries, soy sauce, vinegar, bee
Honey, royal jelly powder, pork, beef, chicken, eel and lobster tails and other foods benzene ring yl ether residue in the determination and confirmation.
2 Method summary
Sample benzene ring yl ether extracted with ethyl acetate, dried and activated carbon neutral alumina series double column method or Florisil solid single column method
After phase extraction purification by gas chromatography - mass spectrometry assay and confirmed, external standard.
3 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade, water is deionized water.
3.1 ethyl acetate. chromatography.
3.2 hexane. chromatographically pure.
3.3 acetone. chromatography.
3.4 anhydrous sodium sulfate. After burning 650 ℃ 4h, placed in a sealed container in the back.
+ 3.5 acetone-hexane (3 + 2, volume ratio) mixed solvent.
3.6 activated carbon SPE. 250mg, 3mL or equivalent person.
3.7 neutral alumina SPE. N-Al2O3,250mg, 3mL or equivalent person.
3.8 Florisil SPE column. Florisil, 0.5g, 3mL or equivalent person.
3.9 benzene ring yl ether standard substance (Difenoconazole, C19H17Cl2N3O3, CAS. 119446-68-3). purity greater than or equal
99.5%.
3.10 benzene ring yl ether standard stock solution. accurately weighed amount of benzene ring yl ether standard, diluted with ethyl acetate formulated as
Standard stock solution 200μg/mL, and stored at 4 ℃.
3.11 benzene ring yl ether standard working solution. Dilute with n-hexane as needed into a standard working solution of appropriate concentration, at 4 ℃.
4 instruments and equipment
4.1 Gas chromatography - mass spectrometry. with negative chemical ionization (NCI).
4.2 rotary evaporator.
4.3 Solid phase extraction unit with a vacuum pump.
4.4 Organization mashed machines.
4.5 mill.
4.6 centrifuge.
5 Sample Preparation and Storage
5.1 Sample Preparation
5.1.1 vegetables or fruits. Take a representative sample of 500g, or peeled, seeded, peeled, de-stemmed, go to the root, to the crown (not water washed), which
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