Journal
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
Volume 422, Issue -, Pages 111-118Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijms.2017.09.005
Keywords
Neutral desorption-extractive electrospray ionization; Mass spectrometry; Multiple pesticides; Honey; Direct analysis
Funding
- 12th Five-rural Areas of the National Science and Technology Plan Project [2012BDA29801]
- National Natural Science Foundation of China [31071551]
- Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) [IRT13054]
- Science and Technology Planning Project at the Ministry of Science and Technology of Jiangxi Province, China [20151BBG70048]
- Advantage Science and Technology Innovation Team Project of Jiangxi Province [20171BCB24002]
- Nanchang University Graduate Student Special Innovation Project [cx2016203]
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An analytical method was developed and validated for the simultaneous determination of residues of three kinds of organophosphorus insecticides and two kinds of carbamate insecticides in honey using neutral desorption-extractive electrospray ionization mass spectrometry (ND-EESI-MS) without any sample pretreatment. The detection limits of the assay ranged from 1.16 to 4.18 ng/g or the studied pesticides. The developed assay was linear over the concentration range of 20.00-1000.00 ng/mL, with correlation coefficients of more than 0.996, and the recoveries ranged between 87.00% and 114.98%, with RSD lower than 6.22% for all pesticides. The matrix effect for all of the pesticides showed signal suppression except for chlorpyrifos-methyl. This ND-EESI-MS method was proved to be effective for the detection of pesticide residues by analyzing eighteen kinds of commercial honey in this study. (C) 2017 Elsevier B.V. All rights reserved.
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