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Determination of five sulfonylurea herbicides in environmental waters and soil by ultra high performance liquid chromatography with tandem mass spectrometry after extraction using graphene

Li, Cheng, Lu, Anxiang, Wang, Jihua, Li, Jie, Ping, Hua, Luan, Yunxia, Chen, Jiayi, Ha, Xuejiao
Journal of separation science 2014 v.37 no.24 pp. 3714-3721
correlation, detection limit, graphene, herbicide resistance, soil, soil pollution, soil sampling, solid phase extraction, sulfonylurea herbicides, tandem mass spectrometry, ultra-performance liquid chromatography, water pollution
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%.