GB/T 21322-2007 English PDF

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GB/T 21322-2007: Determination of 3-methyl-quinoxaline-2-carboxylic acid residues in animal origin food -- High performance liquid chromatography method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21322-2007	259	Add to Cart	3 days	Determination of 3-methyl-quinoxaline-2-carboxylic acid residues in animal origin food -- High performance liquid chromatography method	Valid

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Basic data

Standard ID: GB/T 21322-2007 (GB/T21322-2007)
Description (Translated English): Determination of 3-methyl-quinoxaline-2-carboxylic acid residues in animal origin food -- High performance liquid chromatography method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.120
Word Count Estimation: 10,194
Date of Issue: 2007-10-29
Date of Implementation: 2008-04-01
Quoted Standard: GB/T 6682
Regulation (derived from): China National Standard Approval Announcement2007 No.13 (Total No.113)
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 swine, chicken, edible fish tissue 3-sample preparation and HPLC acid (3-mETHYL-QUINOXALINE-2-CARBOXYLIC ACID, mQCA) residues of-methylquinoxaline -2 Determination. This standard applies to pigs, chicken muscle, quantitative detection of liver and fish muscle mQCA residues.

GB/T 21322-2007: Determination of 3-methyl-quinoxaline-2-carboxylic acid residues in animal origin food -- High performance liquid chromatography 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 3-methyl-quinoxaline-2-carboxylic acid residues in animal origin food. High performance liquid chromatography method ICS 67.120 X04 National Standards of People's Republic of China Food of animal origin in 3-methyl-quinoxaline-2-carboxylic acid Residues HPLC Posted 2007-10-29 2008-04-01 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 of People's Republic of China. This standard was drafted. Huazhong Agricultural University, Chinese Academy of Inspection and Quarantine. The main drafters of this standard. Yuanzong Hui, Wu Yujie, Taoyan Fei, Wang Yulian, Huang Lingli, Chen Dongmei, Peng Tao, Liuzhen Li, Peng Dapeng, Diamond red. Food of animal origin in 3-methyl-quinoxaline-2-carboxylic acid Residues HPLC

1 Scope

This standard specifies the pig, chicken, fish edible tissues of 3-methyl-quinoxaline-2-carboxylic acid (3-methyl-quinoxaline-2-carboxylic Sample preparation and high performance liquid chromatography method for measuring acid, MQCA) residue detection. This standard applies to pigs, chicken muscle, liver and fish muscle MQCA quantitative detection of residues.

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 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987) Principle 3 Muscle or liver tissue samples hydrolyzed in an acidic solution, and then extracted with ethyl acetate, phosphate buffer solution back-extracted with a mixed anion After sub-SPE column purification, high performance liquid chromatography (UV detector) measurement, external standard.

4 Reagents and materials

Unless otherwise indicated, the reagents used were of analytical grade water as a water GB/T 6682 regulations. 4.1 acetonitrile. chromatography. 4.2 ethyl acetate. 4.3 metaphosphate. pure class distinctions. 4.4 phosphoric acid. pure class distinctions. 4.5 formic acid. pure class distinctions. 4.6 dipotassium hydrogen. 4.7 Partial phosphate methanol solution. Accurately weigh 50.0 g of metaphosphoric acid, water was added and heated to dissolve, methanol was added 200mL After cooling, add water to Dilute to 1000mL, mixing, storage at room temperature, valid for one month. 4.8 Sodium hydroxide solution (0.05mol/L). Weigh accurately sodium hydroxide 0.5g, dissolved in distilled water, after cooling dilute to 250mL, often Temperature storage period of three months. 4.9 formic acid - methanol solution. accurate amount of formic acid 1mL to 50mL volumetric flask, add methanol diluted and set the volume to 50mL, mix, now Service is used. 4.10 phosphate buffer (0.01mol/L). Weigh accurately take dipotassium hydrogen (K2HPO4 · 3H2O) 2.28g, add water, 900mL dissolve, Phosphoric acid to adjust the pH to 7.0, add water to 1000mL, stored at room temperature, valid for one month. 4.11 Standard. 3-methyl quinoxaline-2-carboxylic acid content higher than 98%. 4.12 Standard stock solution. Weigh accurately MQCA10.0mg, dubbed methanol concentration 1.0mg/mL standard stock solution, 4 ℃ dark , Valid for six months. 4.13 SPE column MAX column (mixed anion exchange column). Specification 60mg, 3mL. ......

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