Polymer monolithic column containing embedded graphene oxide sheets for sensitive determination of carbamate insecticides by HPLC
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- 作者：Tingting Jin ; Feng Li ; Jing Cheng ; Shiju Wu ; Hongbin Zhou ; Min Cheng
- 关键词：Microextraction ; Micropipette ; Scanning electron microscopy ; High performance liquid chromatography ; Carbamate residues ; Environmental analysis
- 刊名：Microchimica Acta
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：183
- 期：2
- 页码：543-551
- 全文大小：889 KB
- 参考文献：1.EU Council Directive on the Quality of Water Intended for Human Consumption, 98/83/CE, 1998.
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Feng Li (1)
Jing Cheng (1)
Shiju Wu (1)
Hongbin Zhou (1)
Min Cheng (2)
1. Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, Institute of Environmental Chemistry, College of Chemistry, Central China Normal University, Wuhan, 430079, China
2. School of Mechanical Science and Engineering, Hua Zhong University of Science and Technology, Wuhan, 430074, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Analytical Chemistry
Inorganic Chemistry
Physical Chemistry
Characterization and Evaluation Materials
Monitoring, Environmental Analysis and Environmental Ecotoxicology - 出版者：Springer Wien
- ISSN：1436-5073
文摘
We describe a new kind of polymer monolithic column for polymer monolith microextraction (PMME) of carbamate insecticide (methomyl, carbofuran and pirimicarb) residues from water samples. The monolith was prepared inside the tip of a micropipette via thermally initiated free-radical polymerization of methacrylic acid as the monomer, ethylene glycol dimethacrylate as the cross-linker, and graphene oxide (GO) dispersed in the mixed porogens (1-propanol and 1,4-butanediol). The resulting monolith was characterized by scanning electron microscopy and IR spectrometry. The effects of sample flow rate, sample volume, sample pH, desorption solvent and flow rate on PMME were optimized. Compared to a monolith without GO, the new monolith displays higher enrichment capacity, and is reusable and stable. Following extraction, the three carbamates were quantified by HPLC. The limits of detection (for S/N = 3) for the three carbamates are in the range of 0.3–0.7 μg∙L−1, and the intra- and inter-day precisions are <5.7 %. The new monolith was successfully applied for the determination of the insecticides in various (spiked) environmental water samples, with recoveries in the range from 78.9 to 103.4 %.