期刊
JOURNAL OF SEPARATION SCIENCE
卷 37, 期 24, 页码 3714-3721出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.201400797
关键词
Graphene; Solid-phase extraction; Sulfonylurea herbicides; Tandem mass spectrometry; Ultra high performance liquid chromatography
资金
- Innovation and Capacity-building Projects of Beijing Academy of Agriculture and Forestry Sciences [KJCX20140302]
- Youth Scientific Funds of Beijing Academy of Agriculture and Forestry Sciences [QNJJ201432]
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%.
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