title: Determination of five sulfonylurea herbicides in environmental waters and soil by ultra high performance liquid chromatography with tandem mass spectrometry after extraction using graphene.
abstract: A fast and novel analytical method was developed for the determination of trace levels of sulfonylurea herbicides in water and soil samples. Graphene was used as a sorbent for extraction, and ultra high performance liquid chromatography with tandem mass spectrometry was used for quantification. Five sulfonylurea herbicides were preconcentrated from water samples using a graphene-loaded packed cartridge, while extraction from soil samples was performed in a single step using graphene-supported matrix solid-phase dispersion. Under the optimized conditions, the calibration plots were linear in the range between 5 and 1000 ng/L for water samples, and between 1 and 200 ng/g for soil samples. All correlation coefficients (R) were >0.99. The limits of detection for water and soil samples were 0.28-0.53 ng/L and 0.08-0.26 ng/g, respectively. This method was successfully applied to the analysis of spiked samples of environmental water and soil, with recoveries ranging from 84.2-109.3 and 86.12-103.2%, respectively, all with relative standard deviations of <10%.
authors.affiliation: Beijing Research Center for Agricultural Standards and Testing, Beijing, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Li
authors.forename: Anxiang
authors.initials: A
authors.lastname: Lu
authors.forename: Jihua
authors.initials: J
authors.lastname: Wang
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Hua
authors.initials: H
authors.lastname: Ping
authors.forename: Yunxia
authors.initials: Y
authors.lastname: Luan
authors.forename: Jiayi
authors.initials: J
authors.lastname: Chen
authors.forename: Xuejiao
authors.initials: X
authors.lastname: Ha
mesh_terms: D002851:Chromatography, High Pressure Liquid; D006108:Graphite / Q000737:chemistry*; D006540:Herbicides / Q000032:analysis*; D012989:Soil Pollutants / Q000737:chemistry*; D052616:Solid Phase Extraction; D013453:Sulfonylurea Compounds / Q000032:analysis*; D053719:Tandem Mass Spectrometry; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D006540:Herbicides; D012989:Soil Pollutants; D013453:Sulfonylurea Compounds; D014874:Water Pollutants, Chemical; D006108:Graphite
keywords: Graphene; Solid-phase extraction; Sulfonylurea herbicides; Tandem mass spectrometry; Ultra high performance liquid chromatography