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Determination of chlorfenapyr residues in food for import and export
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Basic data
| Standard ID | SN/T 1986-2007 (SN/T1986-2007) |
| Description (Translated English) | Determination of chlorfenapyr 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 | 19,138 |
| 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 Chlorfenapyr residues in sample preparation, gas chromatography and gas chromatography detection methods Mass Spectrometry methods. This standard applies to beans, tea, soybeans, cabbage, apples, vinegar, chicken, pork, fish, beef and other residues Chlorfenapyr determination. |
SN/T 1986-2007: Determination of chlorfenapyr residues in food for import and export
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Determination of chlorfenapyr residues in food for import and export
Exit inspection and quarantine industry standard book People's Republic of China
Imported and exported food chlorfenapyr Residue Detection
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 an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. Tianjin People's Republic of China Entry-Exit Inspection and Quarantine of Zhejiang People's Republic of China
Bureau, People's Republic of China Fujian Exit Inspection and Quarantine, Chinese Academy of Inspection and Quarantine.
The main drafters of this standard. Linan Qing, Zhang Man, Xu Hong, Wu Yanhui, Zhang Hua, HE Jia, Gu Long, Xiaoya Bing, Bao Xiaoxia, Yang Fang, LI Shu-juan.
This is the first issue of inspection and quarantine industry standards.
Imported and exported food chlorfenapyr Residue Detection
1 Scope
This standard specifies the sample preparation, gas chromatography and gas chromatography detection methods in food chlorfenapyr Residues of - and MS methods.
This standard applies to chlorfenapyr residues in beans, tea, soybeans, cabbage, apple, vinegar, chicken, pork, fish, beef and other measurement.
2 Method summary
Sample chlorfenapyr residues extracted with acetonitrile, neutral alumina SPE or GCB SPE column purification, eluent
After concentration constant volume, gas phase chromatography and gas chromatography - mass spectrometry confirmed, external standard.
3 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade, water is distilled water.
3.1 acetonitrile. HPLC fractions.
3.2 hexane. HPLC fractions.
3.3 acetone. HPLC fractions.
3.4 anhydrous sodium sulfate. After burning 650 ℃ 4h, placed in a desiccator.
3.5 sodium chloride.
3.6 sodium chloride solution (100g/L). Weigh 100g of sodium chloride, add water to 1L.
3.7 phosphate buffer solution (1mol/L, pH7.0). Weigh 105g (± 0.1g) and dipotassium hydrogen phosphate 61g (± 0.1g) dihydrogen phosphate
Potassium, adding about 500mL dissolved in water, adjusted pH7.0 with 1mol/L sodium hydroxide or 1mol/L hydrochloric acid, and add water to 1L.
3.8 extract. hexane saturated with acetonitrile + acetonitrile (1 + 1, volume ratio).
3.9 eluent. n-hexane + acetone (1 + 1, volume ratio).
3.10 chlorfenapyr (Chlorfenapyr, C15H11BrClF3N2O, CAS. 122453-73-0) Standard. 99% or greater purity.
3.11 chlorfenapyr standard solution. Accurately weigh an adequate amount of chlorfenapyr standards, paired with n-hexane at a concentration of 100μg/mL standard stock
liquid. Needed with n-hexane diluted to the appropriate concentration of the working standard solution.
Note. Standard stock solution and working standard solution stored in 0 ℃ ~ 4 ℃ refrigerator.
3.12 neutral alumina SPE. 3mL, 500mg.
3.13 GCB SPE. 3mL, 500mg.
3.14 anhydrous sodium sulfate column. 80mm × 40mm (inner diameter) cylindrical funnel, bottom cushion height about 5mm cotton, refill 20g dry sulfur
Sodium.
4 instruments and equipment
4.1 Gas chromatography with electron capture detector.
4.2 Gas chromatography - mass spectrometry with negative chemical ionization.
4.3 filtration device.
4.4 rotary evaporator.
4.5 nitrogen blowing instrument.
4.6 high-speed homogenizer.
4.7 Centrifuge. 3000r/min.
4.8 Solid phase extraction device.
4.9 vortex mixer.
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