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Chromatographia

, Volume 79, Issue 1–2, pp 71–78 | Cite as

A Novel 2-Acrylamide-6-Methoxybenzothiazole Fabricated Molecularly Imprinted Polymers for Direct Fluorescent Sensing of Alachlor

  • Ming Li
  • Feng Shen
  • Zhe Zhang
  • Xueqin RenEmail author
Original

Abstract

In this work, a fluorescent, molecularly imprinted polymer sensor was developed for the rapid and direct sensing of trace alachlor. 2-Acrylamide-6-methoxybenzothiazole, synthesized via a simple one-step reaction with 2-amino-6-methoxybenzothiazole and acryloyl chloride, was used as both fluorescent reporter and functional monomer to prepare an alachlor-imprinted polymer. In this way, binding events produced physically detectable fluorescence signals, and the alachlor could therefore be quantified directly without any further treatment. Binding experiments demonstrated that the fluorescence intensity of the resultant polymer decreased linearly with increases in the concentration of alachlor, in the range of 1–150 μM, and with a detection limit of 0.5 μM. In addition, the fluorescent sensor exhibited significant selectivity toward alachlor over its potentially competing molecules of S-metolachlor, cyanazine, and cypermethrin. Finally, the proposed method was successfully applied for the determination of trace alachlor in corn seed samples, with excellent recoveries ranging from 95.58 to 103.83 %. The developed method shows great potential for the determination of residual alachlor in real samples.

Keywords

Molecularly imprinted polymer Fluorescent Determination Alachlor 

Notes

Acknowledgments

This work was supported by the Chinese National Scientific Foundation (21375146).

Supplementary material

10337_2015_2998_MOESM1_ESM.doc (367 kb)
Supplementary material 1 (DOC 367 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of Environmental Sciences and Engineering, College of Resources and Environmental SciencesChina Agricultural UniversityBeijingPeople’s Republic of China
  2. 2.Agro-Environmental Protection InstituteThe Ministry of AgricultureTianjinChina

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