GB/T 21318-2007 English PDF

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GB/T 21318-2007: Determination of nitroimidazoles residues in foodstuffs of animal origin
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 21318-2007	339	Add to Cart	3 days	Determination of nitroimidazoles residues in foodstuffs of animal origin	Valid

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Basic data

Standard ID: GB/T 21318-2007 (GB/T21318-2007)
Description (Translated English): Determination of nitroimidazoles residues in foodstuffs of animal origin
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.120
Word Count Estimation: 13,154
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 foods of animal origin nitroimidazole original drug eight kinds, metabolites of two kinds of residues by high performance liquid chromatography/tandem mass spectrometry. This standard applies to pork, chicken, beef, liver, liver, bovine liver, pig kidneys, bovine kidney, fish, milk, honey: 4-nitroimidazole, isopropyl metronidazole, 2-methyl imidazole nitrate, Luo metronidazole, metronidazole, chlorine metronidazole imidazole, Dimetridazole, imidazole nitrate residues of benzene and its metabolites hydroxy metronidazole mNZOH (metronidazole metabolites), metronidazole hydroxymethyl imidazole HmmNI (2-ronidazole metabolite) determination, metronidazole imidazole.

GB/T 21318-2007: Determination of nitroimidazoles residues in foodstuffs of animal origin

---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 nitroimidazoles residues in foodstuffs of animal origin ICS 67.120 X04 National Standards of People's Republic of China Residues in food of animal origin nitroimidazole Testing method 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, Appendix C, Appendix D 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. Jilin People's Republic of China Entry-Exit Inspection and Quarantine Shandong People's Republic of China Bureau, Chinese Academy of Inspection and Quarantine. The main drafters of this standard. Wing will, Mou Jun, ZHANG Dai-hui, Lin Liming, Zhang Hongwei, Ma Shumin, Zhao Qingsong, Li Xiaojuan, Peng Tao.

Introduction

Nitroimidazoles including 4-nitroimidazole, metronidazole isopropyl, 2-methyl imidazole nitrate, Ronidazole, metronidazole, metronidazole chlorine imidazole, to the United States Metronidazole, benzene imidazole nitrate, is a class of antibiotics and anti-protozoal drugs. Nitroimidazoles rapid absorption in the body, so in addition to the prototype label residue Drugs, further comprising hydroxy metabolites of metronidazole MNZOH (metronidazole metabolite), hydroxymethyl metronidazole imidazole HMMNI (2- methyl imidazole nitrate, Ronidazole metabolite), which have DNA damage and anti-anaerobic bacteria infection effect. These drugs primarily for the treatment and prevention of tired Local or systemic infections caused by aerobic bacteria, anaerobic inhibition of DNA synthesis, is also used anti-trichomoniasis and amoeba. Since nitroimidazole Nitro-heterocyclic compounds containing drugs having mutagenic cells, leading to carcinogenic effects of these drugs and potential teratogenic effects. Therefore, nitroimidazoles in most countries is prohibited or allowed but must be strictly monitored drugs. This standard provides food of animal origin nitroimidazoles metabolites and high performance liquid chromatography/tandem mass spectrometry confirmed multi-residue methods. Residues in food of animal origin nitroimidazole Testing method

1 Scope

This standard specifies the foods of animal origin nitroimidazole original eight kinds of drugs, metabolites two kinds of residues Performance Liquid Chromatography/Tandem Mass Spectrometry test methods. This standard applies to pork, chicken, beef, liver, chicken liver, beef liver, kidney, beef kidney, fish, milk, honey. 4-nitroimidazole, isopropyl Metronidazole, 2-methyl imidazole nitrate, Ronidazole, metronidazole, metronidazole imidazole chlorine, Dimetridazole, benzene imidazole nitrate residues of metronidazole and its metabolites hydroxy MNZOH (metronidazole metabolite), hydroxymethyl metronidazole imidazole HMMNI (2- methyl imidazole nitrate, Ronidazole metabolite) were measured.

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 Was performed on eight-nitroimidazole, two kinds of metabolites with methanol - acetone homogeneous or ultrasonic extraction, liquid-liquid partition with ethyl acetate, to Gel Permeation Chromatography (GPC) purification, and then by solid phase extraction (SPE) purification by liquid chromatography/tandem mass spectrometry confirmed, external standard quantitative measurement.

4 Reagents and materials

Unless otherwise noted, all reagents were of analytical grade water as a water GB/T 6682 regulations. 4.1 Methanol. HPLC grade. 4.2 acetone. HPLC grade. Ethyl acetate 4.3. HPLC grade. 4.4 Cyclohexane. HPLC grade. 4.5 sodium chloride. 4.6 anhydrous sodium sulfate. After burning 650 ℃ 4h, stored in a sealed container in the back. 4.7 formic acid. pure class distinctions. 4.8 saturated aqueous sodium chloride solution. 4.9 diatomite. 80 mesh to 120 mesh. 4.10 C18 solid phase extraction column. 1.0g, 6mL. 4.11 microporous membranes. organic, 0.45μm. 4.12 nitroimidazole original eight kinds of drugs, metabolites two kinds of standard substance. purity of greater than or equal to 98% (see Appendix A). 4.13 standard stock solution. Weigh each standard were appropriate amount of material, prepared in methanol at a concentration of 1000μg/mL of standard stock Preparation of liquid. The solution should be formulated in a brown flask, up to 12 months at 0 ℃ ~ 4 ℃ refrigerator. 4.14 mixed intermediate standard solution. each standard were accurately move a certain volume of the stock solution, diluted with methanol to the appropriate concentration of the mix Room standard solution. The solution should be formulated in a brown flask, for up to 6 months at 0 ℃ ~ 4 ℃ refrigerator. ......

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