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Determination of 17 pyrethroid residues in troublesome matrices by gas chromatography/mass spectrometry with negative chemical ionization.
Talanta. 2011 Mar 15; 84(1):141-7.T

Abstract

An analytical method with the technique of QuEChERS (quick, easy, cheap, effective, rugged and safe) and gas chromatography (GC)/mass spectrometry (MS) in negative chemical ionization (NCI) has been developed for the determination of 17 pyrethroid pesticide residues in troublesome matrices, including garlic, onion, spring onion and chili. Pyrethroid residues were extracted with acidified acetonitrile saturated by hexane. After a modified QuEChERS clean-up step, the extract was analyzed by GC-NCI/MS in selected ion monitoring (SIM) mode. An isotope internal standard of trans-cypermethrin-D(6) was employed for quantitation. Chromatograms of pyrethroids obtained in all these matrices were relatively clean and without obvious interference. The limits of detection (LODs) ranged from 0.02 to 6 μg kg(-1) and recovery yields were from 54.0% to 129.8% at three spiked levels (20, 40 and 60 μg kg(-1) for chili, and 10, 20 and 30 μg kg(-1) for others) in four different matrices depending on the compounds determined. The relative standard deviations (RSDs) were all below 14%. Isomerization enhancement of pyrethroids in chili extract was observed and preliminarily explained, especially for acrinathrin and deltamethrin.

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Authors+Show Affiliations

Shen CY
Jiangsu Entry-Exit Inspection and Quarantine Bureau of PRC, 99 Zhonghua Road, Nanjing 210001, China. shchy@jsciq.gov.cn
Cao XW
No affiliation info available
Shen WJ
No affiliation info available
Jiang Y
No affiliation info available
Zhao ZY
No affiliation info available
Wu B
No affiliation info available
Yu KY
No affiliation info available
Liu H
No affiliation info available
Lian HZ
No affiliation info available

MeSH

Food AnalysisFood ContaminationGas Chromatography-Mass SpectrometryLimit of DetectionLinear ModelsPesticide ResiduesPyrethrinsReproducibility of ResultsTime FactorsVegetables

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21315911

Citation

Shen, Chong-yu, et al. "Determination of 17 Pyrethroid Residues in Troublesome Matrices By Gas Chromatography/mass Spectrometry With Negative Chemical Ionization." Talanta, vol. 84, no. 1, 2011, pp. 141-7.
Shen CY, Cao XW, Shen WJ, et al. Determination of 17 pyrethroid residues in troublesome matrices by gas chromatography/mass spectrometry with negative chemical ionization. Talanta. 2011;84(1):141-7.
Shen, C. Y., Cao, X. W., Shen, W. J., Jiang, Y., Zhao, Z. Y., Wu, B., Yu, K. Y., Liu, H., & Lian, H. Z. (2011). Determination of 17 pyrethroid residues in troublesome matrices by gas chromatography/mass spectrometry with negative chemical ionization. Talanta, 84(1), 141-7. https://doi.org/10.1016/j.talanta.2010.12.041
Shen CY, et al. Determination of 17 Pyrethroid Residues in Troublesome Matrices By Gas Chromatography/mass Spectrometry With Negative Chemical Ionization. Talanta. 2011 Mar 15;84(1):141-7. PubMed PMID: 21315911.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of 17 pyrethroid residues in troublesome matrices by gas chromatography/mass spectrometry with negative chemical ionization. AU - Shen,Chong-yu, AU - Cao,Xiao-wen, AU - Shen,Wei-jian, AU - Jiang,Yuan, AU - Zhao,Zeng-yun, AU - Wu,Bin, AU - Yu,Ke-yao, AU - Liu,Han, AU - Lian,Hong-zhen, Y1 - 2011/01/08/ PY - 2010/10/02/received PY - 2010/12/18/revised PY - 2010/12/21/accepted PY - 2011/2/15/entrez PY - 2011/2/15/pubmed PY - 2011/6/2/medline SP - 141 EP - 7 JF - Talanta JO - Talanta VL - 84 IS - 1 N2 - An analytical method with the technique of QuEChERS (quick, easy, cheap, effective, rugged and safe) and gas chromatography (GC)/mass spectrometry (MS) in negative chemical ionization (NCI) has been developed for the determination of 17 pyrethroid pesticide residues in troublesome matrices, including garlic, onion, spring onion and chili. Pyrethroid residues were extracted with acidified acetonitrile saturated by hexane. After a modified QuEChERS clean-up step, the extract was analyzed by GC-NCI/MS in selected ion monitoring (SIM) mode. An isotope internal standard of trans-cypermethrin-D(6) was employed for quantitation. Chromatograms of pyrethroids obtained in all these matrices were relatively clean and without obvious interference. The limits of detection (LODs) ranged from 0.02 to 6 μg kg(-1) and recovery yields were from 54.0% to 129.8% at three spiked levels (20, 40 and 60 μg kg(-1) for chili, and 10, 20 and 30 μg kg(-1) for others) in four different matrices depending on the compounds determined. The relative standard deviations (RSDs) were all below 14%. Isomerization enhancement of pyrethroids in chili extract was observed and preliminarily explained, especially for acrinathrin and deltamethrin. SN - 1873-3573 UR - https://www.unboundmedicine.com/medline/citation/21315911/Determination_of_17_pyrethroid_residues_in_troublesome_matrices_by_gas_chromatography/mass_spectrometry_with_negative_chemical_ionization_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0039-9140(11)00008-7 DB - PRIME DP - Unbound Medicine ER -
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