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Attapulgite modified magnetic metal-organic frameworks for magnetic solid phase extraction and determinations of benzoylurea insecticides in tea infusions.
Niu, Mingxin; Li, Zuopeng; He, Wenjuan; Zhou, Wenfeng; Lu, Runhua; Li, Jing; Gao, Haixiang; Zhang, Sanbing; Pan, Canping.
Afiliación
  • Niu M; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
  • Li Z; Institute of Applied Chemistry, Shanxi Datong University, No. 5 Xingyun Street, Datong 037009, China.
  • He W; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
  • Zhou W; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
  • Lu R; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
  • Li J; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
  • Gao H; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
  • Zhang S; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China. Electronic address: san3zhang@yeah.net.
  • Pan C; Department of Applied Chemistry, College of Science, China Agricultural University, Yuanmingyuan West Road 2#, Haidian District, Beijing 100193, China.
Food Chem ; 317: 126425, 2020 Jul 01.
Article en En | MEDLINE | ID: mdl-32106006
Herein, we developed a novel magnetic solid phase extraction method based on attapulgite-modified magnetic metal-organic frameworks (ATP@Fe3O4@ZIF-8), and this method could be used for the determination of benzoylureas when it was coupled with high-performance liquid chromatography. The established method was validated in terms of linearity (2.5-500 µg L-1, with correlation coefficient (R2) > 0.9994), accuracy (with satisfactory recovery of 88.29-95.99%) and precision (with relative standard deviation (RSD) of less than 8%). In addition, the enrichment factors (EF) ranged from 63.6 to 72.2. Limit of detection (LOD) and limit of quantitation (LOQ) were 0.7-3.2 µg L-1 and 2.3-10.7 µg L-1, respectively. Moreover, there was hardly any noticeable loss of the extraction efficiency when this extraction method undergoes five cycles. Finally, this method was successfully used for the determination of six benzoylureas in different tea infusions and the determined relative recoveries ranged from 78.8 to 114.3%.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cromatografía Líquida de Alta Presión / Extracción en Fase Sólida / Estructuras Metalorgánicas / Insecticidas Idioma: En Revista: Food Chem Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Cromatografía Líquida de Alta Presión / Extracción en Fase Sólida / Estructuras Metalorgánicas / Insecticidas Idioma: En Revista: Food Chem Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido