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A novel method for the determination of trace sulfonylurea herbicides by introducing a hybrid stationary phase to common capillary

文献类型： 外文期刊

作者： Yang, Jing-Hua 2 ; Zhou, Xiao-Mao 1 ; Zhang, Yu-Ping 2 ; Chen, Jun 2 ; Ma, Hai-Weng 2 ;

作者机构： 1.Hunan Agr Univ, Changsha, Hunan, Peoples R China

2.Henan Inst Sci & Technol, Hualan Ave East, Xinxiang 453003, Henan, Peoples R China

3.Hunan Acad Agr Sci, Changsha, Hunan, Peoples R China

关键词： UIO-66(Zr)-NH2;solid-phase microextraction;sulfonylurea herbicides;the hybrid fiber;high-performance liquid chromatography

期刊名称：ADSORPTION SCIENCE & TECHNOLOGY （ 影响因子：4.232； 五年影响因子：2.826 ）

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收录情况： SCI

摘要： In this paper, a novel polymerized fiber doped with metal-organic frameworks (UIO-66(Zr)-NH2) was developed in a capillary by microwave irradiation. The fiber was successfully prepared using 4-vinyl pyridine as the monomer and ethylene glycol dimethacrylate as the cross-linker to reinforce its durability. The resultant fiber was applied to extract sulfonylurea herbicides from environmental soil and water samples before analysis with high-performance liquid chromatography. The optimization of different parameters affecting solid-phase microextraction procedure was carried out. Under the optimum experimental conditions, the extraction capability of the hybrid fiber was two times greater than that of the polymer fiber without UIO-66(Zr)-NH2. The proposed hybrid fiber extraction method exhibited low detection limits (0.19-1.79 mu g/l), good precision (< 12.0%), and wide linear range (10-700 mu g/l). Satisfactory recoveries of sulfonylurea herbicides were obtained with spiked soil and water samples in the range of 75.7-94.2 and 82.2-95.3%, respectively.

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