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GB/T 22990-2008 English PDF

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GB/T 22990-2008: Determination of oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in milk and milk powder -- HPLC-UV method
Status: Valid
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GB/T 22990-2008English209 Add to Cart 3 days [Need to translate] Determination of oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in milk and milk powder -- HPLC-UV method Valid GB/T 22990-2008

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Basic data

Standard ID GB/T 22990-2008 (GB/T22990-2008)
Description (Translated English) Determination of oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in milk and milk powder -- HPLC-UV method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard X04
Classification of International Standard 67.050
Word Count Estimation 9,995
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 oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in liquid chromatography-UV detection assay methods. This standard applies to milk and milk powder oxytetracycline, tetracycline, determination of doxycycline residues, chlortetracycline. This standard method detection limit: milk oxytetracycline, tetracycline 5��g/kg, chlortetracycline, doxycycline was 10��g/kg. Milk powder oxytetracycline, tetracycline 25��g/kg, chlortetracycline, doxycycline was 50��g/kg.

GB/T 22990-2008: Determination of oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in milk and milk powder -- HPLC-UV 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 oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in milk and milk powder. HPLC-UV method ICS 67.050 X04 National Standards of People's Republic of China Milk and milk powder oxytetracycline, tetracycline, chlortetracycline, Determination of doxycycline residues LC - UV detection method 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 of People's Republic of China. This standard was drafted. People's Republic of China Exit Inspection and Quarantine Qinhuangdao, Hebei People's Republic of China Entry-Exit Inspection and Quarantine Bureau. The main drafters of this standard. Guo Chunhai, Doucai Yun, Chenrui Chun, Mayu Song, Yilian Feng, Lv Hongying, Gu Haitao, Yaochun Yi, Pang Guofang. Milk and milk powder oxytetracycline, tetracycline, chlortetracycline, Determination of doxycycline residues LC - UV detection method

1 Scope

This standard specifies the milk and milk powder oxytetracycline, tetracycline, chlortetracycline, and doxycycline residues LC - UV detection Determination method. This standard applies to milk and oxytetracycline, tetracycline, chlortetracycline, doxycycline residues in milk powder Determination. The standard method detection limit. milk oxytetracycline, tetracycline 5μg/kg, chlortetracycline, doxycycline is 10μg/kg. Milk Turkey Neomycin, tetracycline 25μg/kg, chlortetracycline, doxycycline is 50μg/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 With 0.1mol/LNa2EDTA-Mclvaine sample extraction buffer solution Tetracycline antibiotic residues, OasisHLB or equivalent Solid phase extraction column and a carboxylic acid type cation exchange column purification, liquid chromatograph, 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 Methanol. chromatographically pure. 4.2 acetonitrile. chromatography. 4.3 Disodium hydrogen phosphate (Na2HPO4 · 12H2O). 4.4 citric acid (C6H8O7 · H2O). 4.5 Disodium ethylenediaminetetraacetate (Na2EDTA · 2H2O). 4.6 oxalic acid (C2H2O4 · 2H2O). 4.7 0.2mol/L disodium hydrogen phosphate solution. Weigh 71.63g disodium hydrogen phosphate (4.3), dissolved in water, dilute to 1000mL. 4.8 0.1mol/L citric acid solution. Weigh 21.04g citric acid (4.4), dissolved in water, dilute to 1000mL. 4.9 Mclvaine buffer solution. 625mL0.2mol/L disodium hydrogen phosphate solution (4.7) and 1000mL0.1mol/L citric acid Solution (4.8) were mixed, if necessary, adjust with NaOH or HCl pH = 4.0 ± 0.05. 4.10 0.1mol/LNa2EDTA-Mclvaine buffer solution. Weigh 60.50g disodium edetate (4.5) into 1625mL Mclvaine buffer solution (4.9) and dissolved, shake.

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