...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Analyst: The Analytical Journal of the Royal Society of Chemistry: A Monthly International Publication Dealing with All Branches of Analytical Chemistry >Multiresidue analysis of pesticides in vegetables and fruits using two-layered column with graphitized carbon and water absorbent polymer
【24h】

Multiresidue analysis of pesticides in vegetables and fruits using two-layered column with graphitized carbon and water absorbent polymer

机译：使用石墨化碳和吸水性聚合物的两层色谱柱对蔬菜和水果中的农药进行多残留分析

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

A high-throughput multiresidue analysis of pesticides in non-fatty vegetables and fruits was developed. The method consisted of a single extraction and a single clean-up procedure. Food samples were extracted with ethyl acetate and the mixture of extract and food dregs were poured directly into the clean-up column. The clean-upcolumn consisted of two layers of water-absorbent polymer (upper) and graphitized carbon (lower), which were packed in a reservoir (75 ml) of a cartridge column. The polymer removed water in the extract while the carbon performed clean-up. In a recovery test, 110 pesticides were spiked and average recoveries were more than 95% from spinach and orange. Most pesticides were recovered in the range 70-115% with RSD usually <10% for five experiments. The residue analyses were performed by the extraction of 12 pesticides from 13 samples. The two methods resulted in similar residue levels except chlorothalonil in celery, for which the result was lower with the proposed method. The results confirmed that the proposed method could be applie dto monitoring op pesticide residue in foods.
机译：建立了非油脂类蔬菜和水果中农药的高通量多残留分析方法。该方法由一次萃取和一次净化程序组成。用乙酸乙酯萃取食物样品，并将萃取物和食物残渣的混合物直接倒入净化柱中。净化柱由两层吸水聚合物（上层）和石墨化碳（下层）组成，这两层填料装在柱式色谱柱的储液罐（75毫升）中。聚合物去除了萃取液中的水分，而碳进行了净化。在回收率测试中，对110种农药进行了加标，菠菜和橙子的平均回收率超过95％。五个实验中，大多数农药的回收率在70-115％之间，RSD通常<10％。通过从13个样品中提取12种农药进行残留分析。除芹菜中百菌清外，这两种方法的残留量相似，而所建议的方法的残留率较低。结果证实该方法可用于食品中农药残留的监测。

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