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Animal remedy residual ability verification sample and method for preparing same

A technology for veterinary drug residues and proficiency testing, which is applied in the preparation of test samples, measuring devices, instruments, etc., can solve problems that are difficult to implement, and achieve the effect of reasonable matrix selection, meeting the requirements of proficiency testing, and simple and reliable preparation methods

Inactive Publication Date: 2005-11-30
林维宣 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The general requirement for proficiency testing samples is to have sufficiently high uniformity and stability, and the particularity of the detection of veterinary drug residues is that the veterinary drug residues in animals are trace or even trace amounts, how to prepare uniform samples at this content level ,difficult to realize

Method used

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  • Animal remedy residual ability verification sample and method for preparing same
  • Animal remedy residual ability verification sample and method for preparing same
  • Animal remedy residual ability verification sample and method for preparing same

Examples

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Embodiment 1

[0016] Reagents and standard substances used:

[0017] Water: ultrapure water, methanol: chromatographically pure, acetonitrile: chromatographically pure, chloroform: chromatographically pure

[0018] Sulfadiazine: Riedel-de Haen, 99.9%, CAS-Nr: 68-35-9

[0019] Sulfamethazine: Riedel-de Haen, 99.7%, CAS-Nr: 57-68-1

[0020] Sulfa-5-methoxine: Riedel-de Haen, 99.8%, CAS-Nr: 651-06-9

[0021] Sulfadimethoxine: Riedel-de Haen, 99.9%, CAS-Nr: 122-11-2

[0022] Sulfaquinoxaline: Sigma, 95%, CAS-Nr: 59-40-5

[0023] 1. Substrate pretreatment: commercially available sheep liver (chicken liver) is cleaned to remove impurities (in order to prevent errors caused by different matrix materials to sample uniformity, all fat, blood vessels, fascia, etc. should be removed as much as possible, and only the liver entity should be retained ), after using liquid phase method or liquid mass method to detect that there are no five kinds of sulfa veterinary drug residues to be tested, use free...

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Abstract

This invention belongs to ability checking field, and relates to a checking sample for residual ability of animal medicine which is added to base material until the weight is 50ppb-5ppm; wherein, said base materials are livers of food origin animals, and said animal medicine comprises tetracyclines, chloramphenicol or sulfonamides. Comparing with prior art, the invention has following advantages and beneficial effects: it is able to adequately distribute the micro even trance animal medicine to substances ready for checking, has a high success rate of preparation of sample, and can prepare ability checking sample for transport and delivery in normal temperature; said residual weight is close to the actual sample value, and is equal and steady enough to meet the demands of ability checking.

Description

technical field [0001] The invention relates to the field of proficiency testing sample preparation, in particular to samples and sample preparation methods in proficiency testing activities of veterinary drug residues. Background technique [0002] In order to ensure the hygiene and safety of animal products, prevent and monitor the residues of drugs and toxic and harmful substances in animal-derived foods, improve the quality of animal products in our country, and protect the health of the people. The proficiency testing projects carried out in the field of domestic food physics and chemistry focused on the analysis of nutritional components in the early stage, such as protein and fat analysis. In recent years, food additives in beverages, methanol in alcohol, aflatoxin in peanuts, Proficiency testing (or proficiency testing) for items such as tetracycline residues in honey, but there is no mature mechanism for food physical and chemical testing proficiency testing items, ...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 林维宣赵彤彤郑江
Owner 林维宣
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