GB/T 22943-2008 English PDF

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GB/T 22943-2008: Determination of trimethoprim residues in honey -- LC-MS-MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22943-2008	209	Add to Cart	3 days	Determination of trimethoprim residues in honey -- LC-MS-MS method	Valid

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Basic data

Standard ID: GB/T 22943-2008 (GB/T22943-2008)
Description (Translated English): Determination of trimethoprim residues in honey -- LC-MS-MS method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 9,997
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 honey three trimethoprim residue liquid chromatography-tandem mass spectrometry. This standard applies to the determination of three honey trimethoprim residues. This standard method detection limit is 2. 0��g/kg.

GB/T 22943-2008: Determination of trimethoprim residues in honey -- 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 trimethoprim residues in honey. LC-MS-MS method ICS 67.050 X04 National Standards of People's Republic of China Determination of honey Three trimethoprim residues 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

Foreword

The 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. This standard was drafted. People's Republic of China Qinhuangdao Exit Inspection and Quarantine. The main drafters of this standard. Caoyan Zhong Jia light group, Zhiwei, Shiyu Qiu, Sun Haixia, Pang Guofang. Determination of honey Three trimethoprim residues Liquid chromatography - tandem mass spectrometry

1 Scope

This standard specifies the honey Three trimethoprim residues in liquid chromatography - tandem mass spectrometry. This standard applies to the determination of three honey trimethoprim residues. The standard method detection limit of 2.0μg/kg.

2 Normative references

The 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 Residues in honey trimethoprim-sulfamethoxazole with a phosphate buffer solution (pH = 9) extracted, filtered, dried OasisHLB1) column or equivalent Solid phase extraction (SPE), eluted with methanol and evaporated to dryness, the residue dissolved in mobile phase, over 0.2μm membrane, the sample solution for HPLC - string Linked mass spectrometer, external standard. 1) OasisHLB solid phase extraction columns are Waters company's product trade name, this information is given for the convenience of users of this standard, not the table Endorsement of the product shown. If other equivalent product has the same effect, you can use these equivalent products.

4 Reagents and materials

4.1 Water. GB/T 6682, level. 4.2 Methanol. chromatographically pure. 4.3 acetonitrile. chromatography. 4.4 dipotassium hydrogen phosphate (K2HPO4 · 3H2O). pure class distinctions. 4.5 potassium dihydrogen phosphate. pure class distinctions. 4.6 Sodium hydroxide. pure class distinctions. 4.7 formic acid. pure class distinctions. 4.8 2.0mol/L sodium hydroxide. Weigh 8.0g of sodium hydroxide (4.6), set the volume to 100mL. 4.9 0.1% formic acid solution. lessons 1.0mL of formic acid (4.7), diluted with water to 1000mL. 4.10 Eluent. methanol solution (2 + 3). Measure 40mL methanol (4.2) was mixed with 60mL water. 4.11 0.2mol/L phosphate buffer solution. take 43.86g dipotassium hydrogen (4.4) and 1.05g of potassium dihydrogen phosphate (4.5), add 1000mL beaker, 800mL dissolved in water with sodium hydroxide (4.6) was adjusted to a pH of 9.0, and then water volume to 1000mL. 4.12 Mobile phase. acetonitrile-0.1% formic acid (7 + 13). ......

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