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Determination of nitrofuran metabolites in pet feeds - Liquid chromatography-tandem mass spectrometry
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Basic data
| Standard ID | GB/T 39670-2020 (GB/T39670-2020) |
| Description (Translated English) | Determination of nitrofuran metabolites in pet feeds - Liquid chromatography-tandem mass spectrometry |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | B46 |
| Classification of International Standard | 65.120 |
| Word Count Estimation | 12,165 |
| Date of Issue | 2020-12-14 |
| Date of Implementation | 2021-07-01 |
| Quoted Standard | GB/T 6682; GB/T 20195 |
| Regulation (derived from) | National Standard Announcement No. 28 of 2020 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
| Summary | This standard specifies the nitrofuran metabolites in pet feed (3-amino-2-oxazolone, 5-morpholinomethyl-3-amino-2-oxazolidinone, 1-amino-hydantoin Liquid chromatography-tandem mass spectrometry method for the determination of urea, semicarbazide) residues. This standard applies to nitrofuran metabolites (3-amino-2-oxazolone, 5-morpholinmethyl-3-amino-2-oxazole) in pet feed made from animal-derived ingredients as the main raw material. Determination of residual amount of alkyl ketone, 1-amino-hydantoin, semicarbazide). The detection limit of this standard is 0.25ug/kg, and the quantification limit is 0.5ug/kg. |
GB/T 39670-2020: Determination of nitrofuran metabolites in pet feeds - Liquid chromatography-tandem mass spectrometry
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(Determination of nitrofuran metabolite residues in pet feed-liquid chromatography-tandem mass spectrometry)
ICS 65:120
B46
National Standards of People's Republic of China
Residual amount of nitrofuran metabolites in pet feed
Determination of liquid chromatography-tandem mass spectrometry
2020-12-14 release
2021-07-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1:1-2009:
Please note that certain contents of this document may involve patents: The issuing agency of this document is not responsible for identifying these patents:
This standard was proposed and managed by the National Feed Industry Standardization Technical Committee (SAC/TC76):
Drafting organizations of this standard: Nanjing Customs of the People's Republic of China, Huaian Customs of the People's Republic of China, Jiangsu Haiqi Great Wall Co:, Ltd:
Division, Huaiyin Teachers College:
The main drafters of this standard: Jiang Yuan, He Jian, Wei Yunji, Huan Haixia, Zhu Zhenyi, Feng Min, Wang Yuanjian, Ke Jiafa, Zhang Yang, Zhang Ke, Zhang Jingyou:
Residual amount of nitrofuran metabolites in pet feed
Determination of liquid chromatography-tandem mass spectrometry
1 Scope
This standard specifies the nitrofuran metabolites (3-amino-2-oxazolone, 5-morpholinomethyl-3-amino-2-oxazolidinone,
1-amino-hydantoin, semicarbazide) residual amount of liquid chromatography-tandem mass spectrometry method:
This standard applies to nitrofuran metabolites (3-amino-2-oxazolone,
5-morpholinomethyl-3-amino-2-oxazolidinone, 1-amino-hydantoin, semicarbazide) determination of residual amount:
The detection limit of this standard is 0:25μg/kg, and the limit of quantification is 0:5μg/kg:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 20195 Preparation of animal feed samples
3 Abbreviations
The following abbreviations apply to this document:
AOZ: 3-amino-2-oxalidinone (3-amino-2-oxalidinone)
AMOZ: 5-morpholinomethyl-3-amino-2-oxalidinone (5-morpholinomethyl-3-amino-2-oxalidinone)
AHD: 1-amino-hydantoin (1-amino-hydantoin)
SEM: semicarbazide
4 Principle
The sample is precipitated with trichloroacetic acid to free the nitrofuran metabolites, and it is derivatized with o-nitrobenzaldehyde under dark conditions:
After the ethyl acid was extracted, it was detected by liquid chromatography-tandem mass spectrometry and quantified by isotope internal standard method:
5 Reagents or materials
Unless otherwise specified, only use analytical reagents:
5:1 Water: GB/T 6682, level one:
5:2 Acetonitrile: chromatographically pure:
5:3 Ammonium acetate: chromatographically pure:
5:4 Formic acid: chromatographically pure:
5:5 Methanol: chromatographically pure:
5:6 Dimethyl sulfoxide:
...
