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