GB/T 22994-2008 English PDFUS$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 22994-2008: Determination of levamisole residues in milk and milk powder -- LC-MS-MS method Status: Valid
Basic dataStandard ID: GB/T 22994-2008 (GB/T22994-2008)Description (Translated English): Determination of levamisole residues in milk and milk powder -- LC-MS-MS method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: X04 Classification of International Standard: 67.050 Word Count Estimation: 9,910 Date of Issue: 2008-12-31 Date of Implementation: 2009-05-01 Quoted Standard: GB/T 6379.1; GB/T 6379.2; GB/T 6682 Regulation (derived from): National Standard Approval Announcement 2008 No.26 (Total No.139) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the milk and milk powder levamisole residues in liquid chromatography-tandem mass spectrometry. This standard applies to liquid milk (including raw milk, pure milk, skim milk) and milk (including plain milk, skimmed milk powder and infant formula) the determination of levamisole (levamisole) residues. This standard milk levamisole detection limit of 0. 4��g/kg, milk powder levamisole detection limit of 3. 2��g/kg. GB/T 22994-2008: Determination of levamisole residues in milk and milk powder -- LC-MS-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 levamisole residues in milk and milk powder. LC-MS-MS method ICS 67.050 X04 National Standards of People's Republic of China Determination of levamisole residues in milk and milk powder Liquid chromatography - tandem mass spectrometry Posted 2008-12-31 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThe Standard Appendix A, Appendix B is an informative annex. This standard is proposed and managed by the State Administration of Quality Supervision Inspection and Quarantine of People's Republic of China. This standard was drafted. People's Republic of China Qinhuangdao Exit Inspection and Quarantine, Qinghai People's Republic of China Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. thin Hyperion, Luo Lili, Jia light group, Caoyan Zhong, Zhao Qing, Pang Guofang. Determination of levamisole residues in milk and milk powder Liquid chromatography - tandem mass spectrometry1 ScopeThis standard specifies the milk and milk powder levamisole residues in liquid chromatography - tandem mass spectrometry. This standard applies to liquid milk (including raw milk, whole milk, skim milk) and milk (including plain milk, skim milk powder and infant formula Milk) levamisole (levamisole) Determination of the residual. This standard milk Levamisole detection limit of 0.4μg/kg; milk powder levamisole detection limit of 3.2μg/kg.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6379.1 measurement methods and results of Accuracy (trueness and precision) - Part 1. General principles and definitions (GB/T 6379.1- 2004, ISO 5725-1.1994, IDT) GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction (GB/T 6379.2-2004, ISO 5725-2.1994, IDT) GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) Principle 3 Extracting a sample in an alkaline environment Levamisole residue with ethyl acetate and dilute hydrochloric acid. The extract was converted to the hydrochloride levamisole Levamisole hydrochloride and Anti-mentioned layer, strong cation exchange solid phase extraction (SPE), liquid chromatography - tandem mass spectrometer, external standard.4 Reagents and materialsUnless otherwise indicated, the reagents used were of analytical grade. 4.1 Water. GB/T 6682, level. 4.2 ethyl acetate. chromatography. 4.3 acetonitrile. chromatography. 4.4 Methanol. chromatographically pure. 4.5 sodium hydroxide. 4.6 of concentrated hydrochloric acid. 4.7 ammonia. 4.8 sodium chloride. 4.9 anhydrous sodium sulfate. before scorching 4h at 650 ℃, placed after the dryer to cool reserve. 4.10 formic acid. pure class distinctions. 4.11 0.1% formic acid solution. Take 1mL formic acid, water volume to 1000mL. Day of preparation. 4.12 0.2mol/L hydrochloric acid solution. take 18mL hydrochloric acid (4.6), water volume to 1000mL. 4.13 10mol/L sodium hydroxide solution. Weigh 40g of sodium hydroxide (4.5) dissolved in water and dilute to 100mL. 4.14 ammonia - methanol solution (1 + 3). Measure 50mL ammonia (4.7) and 150mL of methanol (4.4) mixing, shake. ...... |
