Metsulfuron-methyl Molecularly Imprinted Stir Bar Sorptive Extraction Coupled with High Performance Liquid Chromatography for Trace Sulfonylurea Herbicides Analysis in Complex Samples

高等学校化学研究 ›› 2012, Vol. 28 ›› Issue (4): 594-599.

Metsulfuron-methyl Molecularly Imprinted Stir Bar Sorptive Extraction Coupled with High Performance Liquid Chromatography for Trace Sulfonylurea Herbicides Analysis in Complex Samples

XU Zhi-gang, DU Zhuo, LIAN Hai-xian, HU Yu-ling, LI Gong-ke

School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China

收稿日期:2011-11-09 修回日期:2012-03-28 出版日期:2012-07-25 发布日期:2012-07-25
通讯作者: LI Gong-ke E-mail:cesgkl@mail.sysu.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(Nos.21127008, 21075140, 21105133, 90817012), the Key Program of Natural Science Foundation of Guangdong Province, China(No.9251027501000004), the Cooperation Project in Industry, Education and Research of Guangdong Province and Ministry of Education of China(No.2010B090400142) and the Fundamental Research Funds for the Central Universities of China.

Metsulfuron-methyl Molecularly Imprinted Stir Bar Sorptive Extraction Coupled with High Performance Liquid Chromatography for Trace Sulfonylurea Herbicides Analysis in Complex Samples

XU Zhi-gang, DU Zhuo, LIAN Hai-xian, HU Yu-ling, LI Gong-ke

School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, P. R. China

Received:2011-11-09 Revised:2012-03-28 Online:2012-07-25 Published:2012-07-25
Supported by:
Supported by the National Natural Science Foundation of China(Nos.21127008, 21075140, 21105133, 90817012), the Key Program of Natural Science Foundation of Guangdong Province, China(No.9251027501000004), the Cooperation Project in Industry, Education and Research of Guangdong Province and Ministry of Education of China(No.2010B090400142) and the Fundamental Research Funds for the Central Universities of China.

摘要/Abstract

摘要： Metsulfuron-methyl molecularly imprinted polymer(MIP)-coated stir bar was prepared for sorptiveextraction of sulfonylurea herbicides in complex samples. The MIP-coating was about 21.3 祄 thickness with the relative standard deviation(RSD) of 4.4%(n=10). It was homogeneous and porous with good thermal stability and chemical stability. The extraction capability of the MIP-coating was 2.8 times over that of the non-imprinted polymer (NIP)-coating in hexane. The MIP-coating exhibited selective adsorption ability to the template and its analogues. The extraction conditions, including extraction solvent, desorption solvent, extraction time, desorption time and stirring speed, were optimized. A method for the determination of six sulfonylurea herbicides by MIP-coated stir bar sorptive extraction coupled with high performance liquid chromatography(HPLC) was developed. The linear range was 10-200 礸/L and the detection limits were within a range of 2.0-3.3 礸/L. It was also applied to the analysis of sulfonylurea herbicides in spiked river water, soil and rice samples.

关键词: Molecularly imprinted polymer, Metsulfuron-methyl, Stir bar sorptive extraction, Coating, Sulfonylurea herbicide

Abstract: Metsulfuron-methyl molecularly imprinted polymer(MIP)-coated stir bar was prepared for sorptiveextraction of sulfonylurea herbicides in complex samples. The MIP-coating was about 21.3 祄 thickness with the relative standard deviation(RSD) of 4.4%(n=10). It was homogeneous and porous with good thermal stability and chemical stability. The extraction capability of the MIP-coating was 2.8 times over that of the non-imprinted polymer (NIP)-coating in hexane. The MIP-coating exhibited selective adsorption ability to the template and its analogues. The extraction conditions, including extraction solvent, desorption solvent, extraction time, desorption time and stirring speed, were optimized. A method for the determination of six sulfonylurea herbicides by MIP-coated stir bar sorptive extraction coupled with high performance liquid chromatography(HPLC) was developed. The linear range was 10-200 礸/L and the detection limits were within a range of 2.0-3.3 礸/L. It was also applied to the analysis of sulfonylurea herbicides in spiked river water, soil and rice samples.

Key words: Molecularly imprinted polymer, Metsulfuron-methyl, Stir bar sorptive extraction, Coating, Sulfonylurea herbicide

XU Zhi-gang, DU Zhuo, LIAN Hai-xian, HU Yu-ling, LI Gong-ke . Metsulfuron-methyl Molecularly Imprinted Stir Bar Sorptive Extraction Coupled with High Performance Liquid Chromatography for Trace Sulfonylurea Herbicides Analysis in Complex Samples[J]. 高等学校化学研究, 2012, 28(4): 594-599.

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Metsulfuron-methyl Molecularly Imprinted Stir Bar Sorptive Extraction Coupled with High Performance Liquid Chromatography for Trace Sulfonylurea Herbicides Analysis in Complex Samples

Metsulfuron-methyl Molecularly Imprinted Stir Bar Sorptive Extraction Coupled with High Performance Liquid Chromatography for Trace Sulfonylurea Herbicides Analysis in Complex Samples

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