您好，欢迎访问浙江省农业科学院 机构知识库！
浙江省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Large volume of water samples introduced in dispersive liquid-liquid microextraction for the determination of 15 triazole fungicides by gas chromatography-tandem mass spectrometry

文献类型： 外文期刊

作者： Nie, Jing 1 ; Chen, Fujiang 1 ; Song, Zhiyu 1 ; Sun, Caixia 2 ; Li, Zuguang 1 ; Liu, Wenhan 1 ; Lee, Mawrong 4 ;

作者机构： 1.Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China

3.Minist Agr, Key Lab Detect Pesticide Residues, Hangzhou 310021, Zhejiang, Peoples R China

4.Natl Chung Hsing Univ, Dept Chem, Taichung 40227, Taiwan

关键词： Dispersive liquid-liquid microextraction;Ultrasound/manual shaking-synergy-assisted emulsification;Self-generating CO2 demulsification;Triazole fungicides

期刊名称：ANALYTICAL AND BIOANALYTICAL CHEMISTRY （ 影响因子：4.142； 五年影响因子：3.863 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： A novel method of large volume of water samples directly introduced in dispersive liquid-liquid microextraction was developed, which is based on ultrasound/manual shaking-synergy-assisted emulsification and self-generating carbon dioxide gas (CO2) breaking down the emulsion for the determination of 15 triazole fungicides by gas chromatography-tandem mass spectrometry. This technique makes low-density extraction solvent toluene (180 mu L) dissolve in 200 mL of samples containing 0.05 mol L-1 of HCl and 5 % of NaCl (w/v) to form a well emulsion by synergy of ultrasound and manual shaking, and injects NaHCO3 solution (1.0 mol L-1) to generate CO2 achieving phase separation with the assistance of ultrasound. The entire process is accomplished within 8 min. The injection of NaHCO3 to generate CO2 achieves phase separation that breaks through the centrifugation limited large volume aqueous samples. In addition, the device could be easily cleaned, and this kind of vessel could be reconfigured for any volume of samples. Under optimal conditions, the low limits of detection ranging from 0.7 to 51.7 ng L-1, wide linearity, and enrichment factors obtained were in the range 924-3669 for different triazole fungicides. Southern end of the Beijing-Hangzhou Grand Canal water (Hangzhou, China) was used to verify the applicability of the developed method.

  • 相关文献

[1]HPLC-MS/MS enantioseparation of triazole fungicides using polysaccharide-based stationary phases. Zhang, Hu,Wang, Minghua,Zhang, Hu,Wang, Minghua,Zhang, Hu,Qian, Mingrong,Wang, Xinquan,Wang, Xiangyun,Xu, Hao,Wang, Qiang,Zhang, Hu,Qian, Mingrong,Wang, Xinquan,Wang, Xiangyun,Xu, Hao,Wang, Qiang,Zhang, Hu,Qian, Mingrong,Wang, Xinquan,Wang, Xiangyun,Xu, Hao,Wang, Qiang.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：浙江省农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台