NDLI: Multi-residue Method for Determination of Selected Neonicotinoid Insecticides in Traditional Chinese Medicine Using Modified Dispersive Solid-phase Extraction Combined with Ultra-performance Liquid Chromatography Tandem Mass Spectrometry.

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Multi-residue Method for Determination of Selected Neonicotinoid Insecticides in Traditional Chinese Medicine Using Modified Dispersive Solid-phase Extraction Combined with Ultra-performance Liquid Chromatography Tandem Mass Spectrometry.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Qin, Yao Chen, Lina Yang, Xiaojing Li, Sainan Wang, Yumeng Tang, Ying Liu, Chunming
Description	Author Affiliation: Qin Y ( Central Laboratory, Changchun Normal University.)
Abstract	A reliable and cost-effective method for the determination of multiple neonicotinoids was developed using a modified QuEChERS-based extraction procedure in complex matrices, namely Hedyotis diffusa (a representative of the Traditional Chinese herb which contains lots of pigment, saponin and terpene) and Semifluid extract of deer foetus (a representative of the Chinese traditional patent medicine that was produced with several different herbs, and especially containing lots of protein, except for other interference components). Ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) was used for the quantification and confirmation of five compounds. Except for two transitions obtained by the MRM mode, identification was further carried out by the ion radios. The proposed chemical structure of every selected product ion and the proposed pyrolysis way were presented. The extraction, clean-up, UPLC separation and MS/MS parameters were especially optimized in order to obtain better recoveries. The low limits of detection (LODs) of five insecticides ranged from 0.04 to 0.81 µg kg(-1). Matrix matched calibration in the concentration range of 0.05 - 50 µg kg(-1) were used to compensate the matrix effect, and reasonable recoveries 80.2 - 105.4% of five compounds were demonstrated in different spiked levels with inter-RSD from 1.7 to 10.6%. The proposed method is an alternative approach to make an analysis of neonicotinoids in Chinese medicine, which is more reliable and promising compared with other detection methods.
File Format	HTM / HTML
ISSN	09106340
e-ISSN	13482246
Journal	Analytical Sciences
Issue Number	8
Volume Number	31
Language	English
Publisher	The Japan Society for Analytical Chemistry
Publisher Date	2015-01-01
Publisher Place	Japan
Access Restriction	Open
Subject Keyword	Discipline Analytical Discipline Chemistry Techniques Chromatography, High Pressure Liquid Drugs, Chinese Herbal Chemistry Insecticides Nicotine Pesticide Residues Solid Phase Extraction Tandem Mass Spectrometry Hedyotis Isolation & Purification Limit Of Detection Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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