SN/T 1978-2007 English PDFUS$769.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 1978-2007: Determination of dieldrin and endrin residues in food for import and export. GC-MS method Status: Valid
Basic dataStandard ID: SN/T 1978-2007 (SN/T1978-2007)Description (Translated English): Determination of dieldrin and endrin 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: 24,284 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 dieldrin and endrin residues in sample preparation and gas chromatography mass spectrometry. This standard applies to rice, green beans, spinach, green beans, oranges, grapes, chestnuts, vinegar, rose, tea, pork, chicken, liver, carp, honey, dieldrin and endrin residues and confirmation. SN/T 1978-2007: Determination of dieldrin and endrin residues in food for import and export. GC-MS method---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 dieldrin and endrin residues in food for import and export.GC-MS method Exit inspection and quarantine industry standard book People's Republic of China Importers and dieldrin residues in foods and endrin 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 ForewordThe 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. People's Republic of China Guangdong Entry-Exit Inspection and Quarantine Tianjin People's Republic of China Bureau, Jilin People's Republic of China Entry-Exit Inspection and Quarantine of Hebei People's Republic of China. The main drafters of this standard. Chen Jie, Xie Jianjun, Wang Yuan, Wang Yunfeng, Wang Mingtai, Gebao Kun, Wang Fengchi, Zhuliu Ming. This standard is the first release of the entry-exit inspection and quarantine industry standards. Importers and dieldrin residues in foods and endrin Detection methods Gas Chromatography - Mass Spectrometry1 ScopeThis standard specifies the sample preparation and gas chromatography in food residues of dieldrin and endrin detection - mass spectrometry methods. This standard applies to rice, green beans, spinach, green beans, citrus, grapes, chestnuts, vinegar, roses, tea, pork, chicken, liver, eel, bee Honey dieldrin and endrin residues measured and confirmed.2 Method summaryThe sample was acetonitrile - ethyl acetate or n-hexane - ethyl acetate or ethyl acetate extraction, through neutral alumina or Florisil or alive Activated carbon SPE column purification, using gas chromatography - mass spectrometry NCI ion measurement mode selection, external standard.3 Reagents and materialsUnless otherwise specified, reagents were of analytical grade, water is deionized water. 3.1 acetone. 3.2 ethyl acetate. 3.3 n-hexane. 3.4 acetonitrile. chromatography 3.5 methanol. 3.6 over anhydrous sodium. 650 ℃ burning 4h, cooled in a desiccator to room temperature and stored in a sealed bottle for use. 3.7 sodium chloride. Acetonitrile + 3.8 ethyl acetate (4 + 1, volume ratio). Take acetonitrile 80mL, 20mL of ethyl acetate was added, and mix. Acetonitrile + 3.9 ethyl acetate (2 + 3, volume ratio). Take acetonitrile 40mL, 60mL of ethyl acetate was added, and mix. 3.10 hexane + ethyl acetate (1 + 4, volume ratio). Take hexane 20mL, 80mL of ethyl acetate was added, and mix. 3.11 hexane + acetone (4 + 1, volume ratio). Take hexane 80mL, 20mL of acetone was added, and mix. 3.12 Materials and Standard solution. a) Standards. Dieldrin. purity not less than 99.0% (CAS. 60571) Endrin. purity not less than 99.0% (CAS. 72208); b) dieldrin and endrin standard stock solution. accurately weighed amount dieldrin, endrin, with ethyl acetate preparation of a concentration 1.00mg/mL standard stock solution. The solution was stored at -18 ℃ refrigerator; c) dieldrin and endrin intermediate standard solution. Imbibe appropriate amount of standard stock solution, diluted with ethyl acetate to a concentration of 10.0μg/mL solution of intermediate standard. The solution was stored at -18 ℃ refrigerator; d) dieldrin and endrin standard working solution. According to the standard required intermediate solution was diluted to the appropriate concentration of the standard with ethyl acetate Working fluid. The solution was stored at -18 ℃ refrigerator. 3.13 neutral alumina SPE. 2500mg, 6mL. 3.14 Florisil SPE column. 1000mg, 3mL. 3.15 Activated carbon SPE.200mg, 3mL. 3.16 StrataSDB-L SPE. Styrene-DivinylbenzenePolymer, 200mg, 3mL, or equivalent person. ...... |
