Vortex-assisted matrix solid–liquid dispersive microextraction for the analysis of triazole fungicides in cotton seed and honeysuckle by gas chromatography. (1st April 2016)

• Record Type: Journal Article
• Authors: Xue, Jiaying; Li, Huichen; Liu, Fengmao; Jiang, Wenqing; Hou, Fan
• Is Part Of: Food chemistry. Volume 196(2016)
• Page Start: 867
• Page End: 876
• Publication Date: 2016-04-01
• Subjects: VA-MSLDME vortex-assisted matrix solid-liquid dispersive microextraction -- DLLME dispersive liquid–liquid microextraction -- PLE pressurized-liquid extraction -- SPE solid phase extraction -- MSPD matrix solid phase dispersion -- DSPE dispersive solid phase extraction -- SFE supercritical-fluid extraction -- CHM Chinese herbal medicines -- GC-ECD gas chromatography with electron capture detection -- PSA primary secondary amine -- EF enrichment factor -- ER extraction recovery -- RSD relative standard deviation -- LOD limit of detection -- LOQ limit of quantification; Cotton seed -- Honeysuckle -- Vortex-assisted matrix solid–liquid dispersive microextraction -- Triazole fungicides; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2015.09.093
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: VA-MSLDME was developed for analyzing 7 fungicides in one step within 6 min. VA-MSLDME consists of two solid and three liquid phases in a single system. The performance of VA-MSLDME was evaluated in cotton seed and honeysuckle. The method could be extended to other analytes in a wide range of matrices. Abstract: A one-step analytical method termed vortex-assisted matrix solid–liquid dispersive microextraction (VA-MSLDME) was developed for the determination of seven triazole fungicides from cotton seed and honeysuckle prior to gas chromatography with electron capture detection. The VA-MSLDME was performed by mixing the matrix, primary secondary amine, acetonitrile, toluene, and water in one single system. The target fungicides in the sample were extracted, cleaned up and preconcentrated simultaneously in the matrix/acetonitrile/water/toluene system. Meanwhile, the interferences were adsorbed by the cleanup adsorbent. The extraction recoveries of the fungicides from the samples varied from 82.9% to 97.8% with relative standard deviations of 4.4–8.5%. The enrichment factors of the analytes ranged from 22 to 47, and the limits of detection were in the range of 0.05–20 μg/kg. The results demonstrated the significant predominance of VA-MSLDME in the analysis of pesticide residues in cotton seed and honeysuckle samples.