SN/T 1626: Evolution and historical versions
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| SN/T 1626-2019 | English | 240 |
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Determination of metronidazole, tinidazole, ornidazole, ronidazole, dimetridazole and secnidazole residues in meat and meat products for export -- LC-MS/MS method
| Valid |
SN/T 1626-2019
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| SN/T 1626-2005 | English | 559 |
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Determination of metronidazole, tinidazole, ornidazole, ronidazole, dimetridazole and secnidazole residues in meat and meat products for import and export. HPLC
| Obsolete |
SN/T 1626-2005
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PDF similar to SN/T 1626-2019
Basic data | Standard ID | SN/T 1626-2019 (SN/T1626-2019) | | Description (Translated English) | Determination of metronidazole, tinidazole, ornidazole, ronidazole, dimetridazole and secnidazole residues in meat and meat products for export -- LC-MS/MS method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | C53 | | Word Count Estimation | 14,171 | | Date of Issue | 2019-10-25 | | Date of Implementation | 2020-05-01 | | Older Standard (superseded by this standard) | SN/T 1626-2005 | | Regulation (derived from) | General Administration of Customs Announcement No. 166 of 2019 | | Issuing agency(ies) | General Administration of Customs | SN/T 1626-2005: Determination of metronidazole, tinidazole, ornidazole, ronidazole, dimetridazole and secnidazole residues in meat and meat products for import and export. HPLC
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Determination of metronidazole, tinidazole, ornidazole, ronidazole, dimetridazole and secnidazole residues in meat and meat products for import and export. HPLC
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Import and export of meat and meat products, metronidazole, tinidazole,
Ornidazole, ronidazole, dimetridazole, secnidazole
Determination of residual amount by high performance liquid chromatography
Released on.2005-08-18
2006-02-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted. Hebei Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China.
The main drafters of this standard. Wang Fengchi, Ma Zhendong, Guo Chunhai, Lu Hongying, Ai Lianfeng.
This standard is the first industry standard for entry-exit inspection and quarantine.
Import and export of meat and meat products, metronidazole, tinidazole,
Ornidazole, ronidazole, dimetridazole, secnidazole
Determination of residual amount by high performance liquid chromatography
1 Scope
This standard specifies rotonazole, dimetridazole and their common metabolites in meat and meat products, tinidazole, ornidazole, secnidazole, and
Determination of 7 Nitroimidazole Residues of Nitrozole by High Performance Liquid Chromatography.
This standard applies to chicken, pork, nitroxazole, dimetridazole and their common metabolites, tinidazole, ornidazole, secnidazole, metronidazole
Determination of the amount of azole residue.
2 sample processing
The laboratory samples were all ground with a meat grinder. When the sample amount is too large, take a representative part from each sample, and then completely grind and mix
After homogenization, it is divided into two parts, one part is measured, and the other part is placed in a closed container, and stored at -18 ° C in the dark.
3 Determination method
3.1 Method summary
The nitroimidazole residue in the sample was extracted with ethyl acetate, purified by SCX column, and subjected to high performance liquid chromatography equipped with a UV detector.
The instrument is measured and quantified by external standard method.
3.2 Reagents and materials
Unless otherwise specified, the reagents used were HPLC grade and the water was high purity water.
3.2.1 Acetonitrile.
3.2.2 Methanol.
3.2.3 Acetone.
3.2.4 Ethyl acetate.
3.2.5 Concentrated hydrochloric acid. excellent grade pure.
3.2.6 Glacial acetic acid. excellent grade pure.
3.2.7 Ammonia. Analytically pure.
3.2.8 Hydrochloric acid. 0.1mol/L, draw 0.83mL of concentrated hydrochloric acid, and dilute to 100mL volumetric flask with water.
3.2.9 Acetic acid-ethyl acetate (5+95). 5 mL of glacial acetic acid was made up to 100 mL with ethyl acetate.
3.2.10 Ammonia-acetonitrile (5+95). 5 mL of ammonia water was made up to 100 mL with acetonitrile.
3.2.11 0.45 μm filter.
3.2.12 7 kinds of nitroimidazole standards. purity ≥98.0%, wherein the metabolite of ronidazole and dimetridazole is 1-methyl-2-hydroxymethyl-
5-nitroimidazole (abbreviated as DMZOH).
3.2.13 Standard stock solution. Weigh 10mg (accurate to 0.1mg) of each nitroimidazole standard, dissolve with methanol, and determine separately
It was mixed into a 10 mL brown volumetric flask and mixed, and the concentration of the solution was 1 mg/mL. Stored in the dark at -18 °C for a period of 1 year.
3.2.14 Mixed standard intermediate solution I. Take 1 mL of each standard stock solution, transfer it to a 100 mL brown volumetric flask, and dilute to volume with methanol. The
The solution concentration was 10 μg/mL. Stored in the dark at -18 °C for a period of 1 year.
3.2.15 Mixed standard intermediate solution II. Take 1 mL of mixed standard intermediate solution I in a 100 mL brown volumetric flask and dilute to the mark with water.
The solution concentration was 100 ng/mL. Store in the refrigerator at 1 ° C ~ 4 ° C, protected from light, the shelf life is 3 months.
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