SN/T 2269-2009 English PDF
Basic dataStandard ID: SN/T 2269-2009 (SN/T2269-2009)Description (Translated English): Determination of okadaic acid in shellfish meat for import and export. LC-MS/MS method Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: X20 Classification of International Standard: 67.050 Word Count Estimation: 16,193 Date of Issue: 2009-02-20 Date of Implementation: 2009-09-01 Regulation (derived from): National Quality Inspection [2009] No. 67 Issuing agency(ies): General Administration of Customs Summary: This standard specifies the import and export of mussels and clams in okadaic acid sample preparation and liquid chromatography tandem mass spectrometry detection method. This standard applies to import mussels and clams in the detection of okadaic acid. SN/T 2269-2009: Determination of okadaic acid in shellfish meat for import and export. 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 okadaic acid in shellfish meat for import and export.LC-MS/MS method Exit inspection and quarantine industry standard book People's Republic of China Detection and export shellfish meat okadaic acid Liquid chromatography - tandem mass spectrometry Posted 2009-02-20 2009-09-01 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 Shanghai Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Fang Xiaoming, Wang, Tang Yifeng, Wang Chuan now. This standard is the first release of the entry-exit inspection and quarantine industry standards. Detection and export shellfish meat okadaic acid Liquid chromatography - tandem mass spectrometry1 ScopeThis standard specifies the import and export mussels and clams in okadaic acid sample preparation and liquid chromatography - tandem mass spectrometry. This standard applies to detect and export mussels and clams in okadaic acid.2 Determination2.1 Method summary Sample of okadaic acid with methanol/water extraction, chloroform extraction and then by Sep-paksilica solid-phase extraction (SPE), By C18 column chromatography, choose positive electrospray ionization mass spectrometry mode, external standard. 2.2 Reagents and materials Unless otherwise specified, the reagents were of analytical grade, double distilled water or deionized water to adapt. 2.2.1 acetonitrile. HPLC grade. 2.2.2 methanol. 2.2.3 formic acid. 2.2.4 n-hexane. 2.2.5 chloroform. 2.2.6 acetone. 2.2.7 Nitrogen. purity > 99.9%. 2.2.8 Methanol - water (80 + 20). 2.2.9 n-hexane - acetone - water (20 + 80 + 0.3). 2.2.10 methanol - acetone - water (3 + 97 + 0.3). 2.2.11 methanol - acetone - water (50 + 50 + 0.3). 2.2.12 0.1% aqueous formic acid solution (containing 2mmol/L ammonium acetate). 1L of water was added 0.156g 1.0mL of formic acid and ammonium acetate. 2.2.13 acetonitrile and 0.1% aqueous formic acid solution (containing 2mmol/L ammonium acetate) (30 + 70). 2.2.14 okadaic acid (Okadaicacid, C44H68O13, CAS number. 78111-17-8) standard substance. not less than 98.0% purity. 2.2.15 okadaic acid standard stock solution. accurately weighed amount of standard okadaic acid, methanol formulated as 10μg/mL of Standard stock solution at -18 ℃ can be stored for six months. The stock solution can be diluted to a suitable concentration of an intermediate solution as needed. 2.2.16 okadaic acid matrix standard solution. draw the right amount of okadaic acid standard stock solution or intermediate solution needed (2.2.15), with a blank sample extract was diluted into a matrix of standard working solution of appropriate concentration. Paul matrix standard working solution at -18 ℃ Deposit may be used for one week. 2.2.17 Sep-paksilica column. Before using a small column in advance with 10mL acetone (containing 0.3% water), 10mL of methanol (containing 0.3% water) and 10mL hexane - acetone - water (20 + 80 + 0.3) activated, a flow rate of 2mL/min. 2.3 instruments and equipment 2.3.1 Liquid chromatography - tandem mass spectrometry. equipped with electrospray ionization source. 2.3.2 Solid phase extraction device. 2.3.3 thermostat nitrogen blowing means. 2.3.4 homogenizer. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 2269-2009_English be delivered?Answer: Upon your order, we will start to translate SN/T 2269-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically in 9 seconds (download/delivered in 9 seconds). The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of SN/T 2269-2009_English with my colleagues?Answer: Yes. 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