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| SN/T 1990-2007 | English | 759 |
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Determination of azocyclotin and cyhexatin residues in food for import and export. GC-MS method
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SN/T 1990-2007
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Basic data | Standard ID | SN/T 1990-2007 (SN/T1990-2007) | | Description (Translated English) | Determination of azocyclotin and cyhexatin residues 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 | 19,145 | | 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 triazole ring tin tin and gas chromatography mass spectrometry. This standard applies to tea, leeks, apple, chestnut, licorice, rice, vinegar, honey, beef, chicken, fish, pork liver and tricyclic Azocyclotin tin residues and confirmation. | SN/T 1990-2007: Determination of azocyclotin and cyhexatin residues in food for import and export. GC-MS method
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Determination of azocyclotin and cyhexatin residues in food for import and export.GC-MS method
Exit inspection and quarantine industry standard book People's Republic of China
Imported and exported food azocyclotin and cyhexatin residues
Detection methods 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
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 by the People's Republic of China CIQ Shaanxi, Tianjin, People's Republic of China Exit Inspection and Quarantine, the Chinese people
Inner Mongolia, People's Republic of Exit Inspection and Quarantine, People's Republic of China Shandong Exit Inspection and Quarantine, People's Republic of China Fujian access
Habitat Inspection and Quarantine Bureau responsible for drafting.
The main drafters of this standard. Li Jianhua, He Qiang, Kong Xianghong, love mountain music, Gebao Kun, Lin Anqing, Li Gang, Pan Guoqing, Wang Jianhua, Yang Fang.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Imported and exported food azocyclotin and cyhexatin residues
Detection methods Gas Chromatography - Mass Spectrometry
1 Scope
This standard specifies the foods azocyclotin and cyhexatin gas chromatography - mass spectrometry method.
This standard applies to tea, leeks, apples, Chinese chestnut, licorice, rice, vinegar, honey, beef, chicken, fish, liver, and three in the azocyclotin
Determination of ring tin residues and confirmation.
2 Method summary
The sample remaining in the azocyclotin hydrolyzed under acidic conditions as cyhexatin, cyhexatin was extracted with acetone, petroleum ether liquid - liquid partition Purification
After reagents with methyl iodide, magnesium derivatized to form tricyclic hexyl methyl tin, and then Florisil solid-phase extraction (SPE), the eluent was concentrated and given
After content, gas chromatography - mass spectrometer and validation, external standard.
3 Reagents and materials
Unless otherwise indicated, the reagents used were of analytical grade, water is distilled water.
3.1 acetone.
3.2 petroleum ether. boiling range 60 ℃ ~ 90 ℃.
Anhydrous ether 3.3; dehydrated with metallic sodium.
3.4 methyl magnesium iodide solution. synthetic methods in Appendix A.
3.5 hydrobromide.
3.6 anhydrous sodium sulfate. After burning 650 ℃ 4h, stored in a sealed container in the back.
3.7 10% hydrochloric acid solution.
3.8 aqueous sodium chloride. 20g/L.
3.9 azocyclotin standard substance (Azocyclotin, C20H35N3Sn, CASN o. 41083-11-8). purity greater than or equal to 98%.
3.10 cyhexatin standard substance (Cyhexatin, C18H34OSn, CASN o. 13121-70-5). purity greater than or equal to 98%.
3.11 Standard stock solution. accurately weigh the right amount of cyhexatin and azocyclotin standards were formulated with acetone to 100μg/mL standard
Stock solution stored at 4 ℃.
3.12 standard working solution. Diluted test requirements in accordance with acetone to the corresponding standard working solution, stored at 4 ℃.
3.13 florisil (Florisil) SPE. 1g, 6mL.
4 instruments and equipment
4.1 Gas chromatography - mass spectrometry with EI source.
4.2 Organization mashed machines.
4.3 mill.
4.4 homogenizer.
4.5 oscillator.
4.6 rotary evaporator.
4.7 Solid phase extraction unit with a vacuum pump.
4.8 low-speed centrifuge.
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