GB/T 22948-2008 English PDF

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GB/T 22948-2008: Determination of trimethoprim residues in royal jelly -- LC-MS-MS method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22948-2008	209	Add to Cart	3 days	Determination of trimethoprim residues in royal jelly -- LC-MS-MS method	Valid

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Basic data

Standard ID: GB/T 22948-2008 (GB/T22948-2008)
Description (Translated English): Determination of trimethoprim residues in royal jelly -- LC-MS-MS method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 9,931
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 royal jelly three trimethoprim residues in liquid chromatography-tandem mass spectrometry. This standard applies to the determination of royal jelly trimethoxybenzaldehyde section sulfamethoxazole residues. This standard method detection limit of 2. 0 ��g/kg.

GB/T 22948-2008: Determination of trimethoprim residues in royal jelly -- 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 royal jelly. LC-MS-MS method ICS 67.050 X04 National Standards of People's Republic of China Determination of royal jelly 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, Zhang Jinjie, Shiyu Qiu, Wangzhan Ying, Pang Guofang. Determination of royal jelly Three trimethoprim residues Liquid chromatography - tandem mass spectrometry

1 Scope

This standard specifies the royal jelly Three trimethoprim residues in liquid chromatography - tandem mass spectrometry. This standard applies to the determination of three royal jelly 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 Three residues in royal jelly trimethoprim deionized water extraction, TCA protein, centrifuged, the supernatant by Oasis MCX ion exchange column 1) or equivalent solid-phase extraction (SPE) with ammonia - methanol eluted and evaporated and the residue with acetonitrile and 0.1% formic acid Dissolved. Sample solution for chromatography - tandem mass spectrometer, external standard. 1) OasisMCX ion exchange 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 TCA. pure class distinctions. 4.5 formic acid. pure class distinctions. 4.6 ammonia. AR. 4.7 TCA solution. 50% (mass fraction). 20g trichloroacetic acid (4.4) was dissolved in 20mL of water. 4.8 2% formic acid solution. lessons 2mL formic acid (4.5) diluted with water to 100mL. 4.9 0.1% formic acid solution. draw 1mL formic acid (4.5) diluted with water to 1000mL. 4.10 Mobile phase. acetonitrile-0.1% formic acid (7 + 13). 4.11 ammonia - methanol solution (1 + 19). 5mL ammonia (4.6) and 95mL methanol (4.2) were mixed uniformly. 4.12 trimethoprim-sulfamethoxazole standard substance (CAS. 738-70-5). purity ≥99%. 4.13 0.1mg/mL standard stock solution. Weigh accurately take the right amount of standard substance (4.12), paired with methanol standard stock 0.1mg/mL of ......

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