239
Views
12
CrossRef citations to date
0
Altmetric
LIQUID CHROMATOGRAPHY

Determination of Pyrethroids in Environmental Waters Using Magnetic Chitosan Extraction Coupled with High Performance Liquid Chromatography Detection

&
Pages 1183-1197 | Received 09 Oct 2012, Accepted 22 Nov 2012, Published online: 30 Apr 2013
 

Abstract

The magnetic chitosan was prepared by adding chitosan, Fe2+ and Fe3+ into a basic precipitant of NaOH solution. The synthetic magnetic chitosan was characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and physical properties. The adsorption characteristics of magnetic chitosan for extracting pyrethroids from water samples were investigated. The analytes were separated by magnetic solid phase extraction and determined by high performance liquid chromatography. The optimum conditions of adsorption experiments were obtained: the amount of sorbent was 80 mg, the extraction time was 20 min, the washing solvent was 50% aqueous methanol, and the eluent was acetonitrile-acetic acid (99: 1, v/v). The obtained linearity of three pyrethroids was in the range of 30–3000 ng L−1. The detection limits of beta-cyfluthrin, cyhalothrin, and cyphenothrin were 7.5, 5.6, and 6.1 ng L−1, respectively. The intra-day and inter-day precisions of three pyrethroids were in the range of 3.6–5.2% and 5.9–8.6%, respectively. In the optimized conditions, three water samples were analyzed, and the recoveries of pyrethroids obtained were 83.2–95.2%.

Acknowledgments

This work was supported by the Fundamental Research Funds for the Central Universities (No. DL10DB01).

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 768.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.