alexa Simultaneous Determination of Six Insecticides in Okra
ISSN: 2157-7064

Journal of Chromatography & Separation Techniques
Open Access

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Research Article

Simultaneous Determination of Six Insecticides in Okra (Abelmoschus esculentus L. Moench) by UHPLC-MS/MS

Husham NM Hussan1, Xingang Liu2, Fengshou Dong2, Jun Xu2 and Yongquan Zheng2*

1 Pesticides Residue Analysis Laboratory, Crop Protection Research Centre, Agricultural Research Cooperation, Wad Medani, Sudan

2 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China

*Corresponding Author:
Yongquan Zheng
Institute of Plant Protection, Chinese Academy of Agricultural Sciences
Key Laboratory of Pesticide Chemistry and Application
Ministry of Agriculture; Beijing 100193, P.R China
Tel: +86-01- 62815938
Fax: +86-01-62815938
E-mail: [email protected]

Received Date: June 14, 2017; Accepted Date: June 21, 2017; Published Date: June 27, 2017

Citation: Hussan HNM, Liu X, Dong F, Xu J, Zheng Y (2017) Simultaneous Determination of Six Insecticides in Okra (Abelmoschus esculentus L. Moench) by UHPLC-MS/MS. J Chromatogr Sep Tech 8:370. doi: 10.4172/2157-7064.1000370

Copyright: © 2017 Hussan HNM, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

The sensitive analytical method using quick, easy, cheap, effective, rugged and safe (QuEChERS) method for simultaneous determination of six insecticides in Okra was developed by UHPLC -MS-MS. The six insecticides were extracted from Okra matrices using acetonitrile and subsequently clean up using only octadecylsilance as sorbent prior to LC-MS-MS analysis. The determination of the target compounds were achieved in less than 2.0 min using an electrospray ionization source in positive mode (ESI+) for imidacloprid, acetamiprid, thiacloprid, thiamethoxam, clothianidin and negative mode (ESI-) for flonicamid. The method showed that the limits quantification (LOQ) ranged from 0.13 to 5.9 μgkg-1 in all matrices. The matrix-matched standard gave satisfactory recoveries (72.4%-105.1%) and relative standard deviation (2.2 - 20.0%) values in different matrices at three spiked levels (0.01, 0.1, and 1 mgkg-1) for Okra.

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