title: Novel and rapid method for determination of organophosphorus pesticide residues in edible fungus using direct gas purge microsyringe extraction coupled on-line with gas chromatography-mass spectrometry.
abstract: In this work a new analytical method for a rapid and simultaneous determination of 28 organophosphorus pesticides (OPPs) residues in edible fungus using gas purge microsyringe extraction (GP-MSE), coupled with on-line gas chromatography-mass spectrometry (GP-MSE-GC-MS) has been developed and optimized. GP-MSE, a novel gas flow liquid-phase microextraction technique, has been then fruitfully used as innovative and one-step extraction procedure, allowing a direct injection into the gas chromatograph coupled with a mass spectrometry detector (GC-MS) system without any further cleaning step. Once optimized, the GP-MSE-GC-MS analysis procedure showed reproducibility values, resolutions, linear responses, detection and quantification limits that allowed to consider this method suitable for the analysis of the 28 OPPs in real samples. Furthermore, OPP recoveries and the relative standard deviations (RSDs) ranged from 85.26% to 100.21%, and from 1.6% to 6.9%, respectively. This procedure was then used for the analysis of real samples and the obtained results were compared with those of ultrasonic extraction-solid phase extraction. Among the 28 OPPs, 14 of them were found in Lentinus edodes and Enoki mushrooms fungus samples, with a total concentrations of 112.7 and 210.7 μg kg(-1), respectively. This work demonstrated then that GP-MSE-GC-MS provided a highly efficient, solvent-saving, accurate and sensitive quantitative analysis method for a rapid determination of OPPs in edible fungus.
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China; Yanbian Entry-Exit Inspection and Quarantine Bureau, Tianchi Road 3169, Yanji City, Jilin Province 133000, China.
authors.forename: Jingxi
authors.initials: J
authors.lastname: Nan
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China.
authors.forename: Juan
authors.initials: J
authors.lastname: Wang
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China. Electronic address: pxf@ybu.edu.cn.
authors.forename: Xiangfan
authors.initials: X
authors.lastname: Piao
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China.
authors.forename: Cui
authors.initials: C
authors.lastname: Yang
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China.
authors.forename: Xue
authors.initials: X
authors.lastname: Wu
authors.affiliation: SAFE - Department of Science of Agriculture, Food and Environment, University of Foggia, via Napoli 25, I-71100 Foggia, Italy.
authors.forename: Maurizio
authors.initials: M
authors.lastname: Quinto
authors.affiliation: Key Laboratory of Natural Resource of the Changbai Mountain and Functional Molecular (Yanbian University), Ministry of Education, Park Road 977, Yanji City, Jilin Province 133002, China. Electronic address: dhli@ybu.edu.cn.
authors.forename: Donghao
authors.initials: D
authors.lastname: Li
mesh_terms: D001487:Basidiomycota / Q000737:chemistry*; D005506:Food Contamination / Q000032:analysis; D008401:Gas Chromatography-Mass Spectrometry; D059627:Liquid Phase Microextraction; D009943:Organophosphorus Compounds / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D052616:Solid Phase Extraction; D014465:Ultrasonics
chemical_list: D009943:Organophosphorus Compounds; D010573:Pesticide Residues
keywords: Edible funguses; Gas chromatography–mass spectormetry; Gas purge; Liquid phase microextraction; Organophosphorus pesticides