首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Direct Detection of Toxic Contaminants in Minimally Processed Food Products Using Dendritic Surface-Enhanced Raman Scattering Substrates
【2h】

Direct Detection of Toxic Contaminants in Minimally Processed Food Products Using Dendritic Surface-Enhanced Raman Scattering Substrates

机译:使用树突表面增强拉曼散射底物直接检测最低限度加工的食品中的有毒污染物

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

We present a method for the surface-enhanced Raman scattering (SERS)-based detection of toxic contaminants in minimally processed liquid food products, through the use of a dendritic silver nanostructure, produced through electrokinetic assembly of nanoparticles from solution. The dendritic nanostructure is produced on the surface of a microelectrode chip, connected to an AC field with an imposed DC bias. We apply this chip for the detection of thiram, a toxic fruit pesticide, in apple juice, to a limit of detection of 115 ppb, with no sample preprocessing. We also apply the chip for the detection of melamine, a toxic contaminant/food additive, to a limit of detection of 1.5 ppm in milk and 105 ppb in infant formula. All the reported limits of detection are below the recommended safe limits in food products, rendering this technique useful as a screening method to identify liquid food with hazardous amounts of toxic contaminants.
机译:我们提出了一种基于表面增强拉曼散射(SERS)的方法,该方法通过使用树突状银纳米结构(通过溶液中纳米粒子的电动组装)产生的最低限度加工的液态食品中的有毒污染物进行检测。树状纳米结构在微电极芯片的表面上产生,并通过施加的直流偏压连接到交流电场。我们将此芯片用于检测苹果汁中有毒的水果杀虫剂thiram,检测限为115 ppb,无需样品预处理。我们还将这种芯片用于检测三聚氰胺(一种有毒污染物/食品添加剂)的检出限,牛奶中的检出限为1.5 ppm,婴儿配方中的检出限为105 ppb。报告的所有检测限均低于食品中建议的安全限度,这使得该技术可作为一种筛选方法,用于识别具有危险量的有毒污染物的液态食品。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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