• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>American Society for Mass Spectrometry Conference on Mass Spectrometry and Allied Topics >Quantitative Determination of Ultratrace Level N-Methyl Carbamates in Rice Samples by Accelerated Solvent Extraction (ASE) and Ultrahigh Performance Liquid Chromatography Tandem Mass Spectrometry (UHPLC-MS/MS)
【24h】

Quantitative Determination of Ultratrace Level N-Methyl Carbamates in Rice Samples by Accelerated Solvent Extraction (ASE) and Ultrahigh Performance Liquid Chromatography Tandem Mass Spectrometry (UHPLC-MS/MS)

机译：通过加速溶剂萃取（ASE）和超高性能液相色谱串联质谱（UHPLC-MS / MS）定量测定水稻样品中超粒水平N-甲基氨基甲酸酯（UHPLC-MS / MS）

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This work describes a high-throughput UHPLC-MS/MS method for ultra-trace level analysis of 11 U.S. EPA specified N-methyl carbamates in rice samples. Accelerated solvent extraction was used for sample preparation and MS/MS instrument operated in product ion monitoring mode was selected to provide sensitive and selective quantification. As demonstrated here, NMCs can be routinely quantified at extremely low levels (LLOQs at 10 ppt; 100 ppt for 1-naphthol). Excellent linearity and correlations of determination (r) were observed through a two orders-of-magnitude calibration range. Method specificity was validated and confirmed. Method quality parameters such as precision and accuracy, recovery, and matrix effect were also evaluated and presented. This method was then successfully applied to the quantification of NMCs in rice samples, and three NMCs were found in two imported rice samples.
机译：该作品描述了11个U.PA的超痕量分析的高通量UHPLC-MS / MS方法，其在水稻样品中的N-甲基氨基甲酸酯。加速溶剂萃取用于样品制剂，选择在产物离子监测模式下操作的MS / MS仪器提供敏感和选择性定量。如这里所示，NMC可以在极低的水平下常规定量（10 ppt的LLOQ; 100 ppt用于1-萘酚）。通过两个幅度校准范围观察到优异的线性度和测定（R）的相关性。方法特异性验证并确认。方法还评估和呈现了方法质量参数，如精度和准确性，恢复和矩阵效应。然后成功地应用于水稻样品中NMC的定量，并在两种进口水稻样品中发现了三种NMC。

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