• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Food Additives & Contaminants >β-Agonists in animal feed Ⅰ: first intercomparison of methods of analysis for clenbuterol in animal feed materials
【24h】

β-Agonists in animal feed Ⅰ: first intercomparison of methods of analysis for clenbuterol in animal feed materials

机译：动物饲料中的β-激动剂Ⅰ：动物饲料中盐酸克伦特罗的分析方法的首次比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The European Commission, Measurement and Testing Programme (BCR) has initiated a project to improve the methodology for analysis of β-agonists in animal feeding stuffs. An intercomparison of methods for clenbuterol in animal feed is described. The study involved 13 European laboratories which analysed a blank feed and three feed samples with three different levels of clenbuterol contamination. The participants used a variety of extraction (organic or aqueous solvents), clean-up (liquid-liquid, silica and C-18 solid phase and immuno-affinity chromatography) and end-point detection (HPLC, GC-MS and TLC) steps. The purpose of this study was to identify and to quantify clenbuterol. The coefficient of variation from all the results for the low level (25 μg/kg) was 39%, for the intermediate level (100 μg/kg) 52% and for the high level (1000 μg/kg) 35%. The study showed that the initial extraction, the modular clean-up step and their compatibility to the HPLC and the GC-MS determination step were critical steps.
机译：欧洲委员会测量与测试计划（BCR）已启动一个项目，以改善动物饲料中β激动剂的分析方法。描述了动物饲料中盐酸克伦特罗方法的比较。该研究涉及13个欧洲实验室，这些实验室分析了一种空白饲料和三种具有三种不同水平的盐酸克伦特罗污染的饲料样品。参与者使用了各种萃取（有机或水性溶剂），净化（液-液，硅胶和C-18固相和免疫亲和色谱）和终点检测（HPLC，GC-MS和TLC）步骤。这项研究的目的是鉴定和定量克仑特罗。低含量（25μg/ kg）的所有结果的变异系数为39％，中含量（100μg/ kg）的52％和高含量（1000μg/ kg）的35％。研究表明，初始提取，模块化净化步骤及其与HPLC和GC-MS测定步骤的相容性是关键步骤。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号