Pipette tip-based molecularly imprinted monolith for selective micro-solid-phase extraction of methomyl in environmental water

Ting Du; Jing Cheng; Min Wu; Xiaohua Wang; Hongbin Zhou; Min Cheng

doi:10.1039/C4AY00766B

Pipette tip-based molecularly imprinted monolith for selective micro-solid-phase extraction of methomyl in environmental water

Ting Du,^a Jing Cheng,*^a Min Wu,^a Xiaohua Wang,^a Hongbin Zhou^a and Min Cheng*^b

* Corresponding authors

^a Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
E-mail: chengjingok@mail.ccnu.edu.cn
Fax: +86-27-67867961
Tel: +86-27-67867961

^b School of Mechanical Science and Engineering, Hua Zhong University of Science, and Technology, Wuhan 430074, China
E-mail: 494350301@qq.com
Fax: +86-27-87543670
Tel: +86-27-87543770

Abstract

A novel low molecular weight methomyl molecule-imprinted monolith (MIM) was prepared inside a polypropylene pipette tip by polymerization reaction. Then the pipette tip-based MIM micro-solid-phase extraction (PT-MIM-μ-SPE) method was developed for selective extraction of methomyl in aqueous solution. The extraction parameters, such as the sample flow rate, sample volume and elution solvent, were investigated. By combining with a high performance liquid chromatography-ultraviolet detector, the PT-MIM-μ-SPE method showed a good linear range of 0.6–1000.0 μg L⁻¹ with a low limit of detection of 0.2 μg L⁻¹. The method was also applied for the pretreatment of methomyl in various environmental water samples. The relative recoveries were in the range of 84.9 to 105.1% with relative standard deviations less than 9.0%. The results showed that methomyl could be selectively enriched and monitored from environmental water samples.

Supplementary files

Publication details

The article was received on 28 Mar 2014, accepted on 09 Jun 2014 and first published on 10 Jun 2014

Article type: Paper

DOI: 10.1039/C4AY00766B

Author version available: Download Author version (PDF)

Citation: Anal. Methods, 2014,6, 6375-6380

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Pipette tip-based molecularly imprinted monolith for selective micro-solid-phase extraction of methomyl in environmental water

T. Du, J. Cheng, M. Wu, X. Wang, H. Zhou and M. Cheng, Anal. Methods, 2014, 6, 6375
DOI: 10.1039/C4AY00766B
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Analytical Methods

Pipette tip-based molecularly imprinted monolith for selective micro-solid-phase extraction of methomyl in environmental water

Abstract

Supplementary files

Publication details

Pipette tip-based molecularly imprinted monolith for selective micro-solid-phase extraction of methomyl in environmental water

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