Journal
TALANTA
Volume 84, Issue 1, Pages 104-108Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2010.12.027
Keywords
Solid-phase microextraction; Multiwalled carbon nanotubes; Polypyrrole; Pyrethroids; Gas chromatography
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Funding
- Science and Technology Projects of Fujian Province [2010Y0050]
- Program of Science and Technology of Xiamen for University Innovation [3502Z20093004]
- National Nature Scientific Foundation of China-Korea [20911140274]
- Program for Chenguang Young Scientist for Wuhan [200950431184]
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A novel solid-phase microextraction (SPME) fiber coated with multiwalled carbon nanotubes/polypyrrole (MWCNTs/Ppy) was prepared with an electrochemical method and used for the extraction of pyrethroids in natural water samples. The results showed that the MWCNTs/Ppy coated fiber had high organic stability, and remarkable acid and alkali resistance. In addition, the MWCNTs/Ppy coated fiber was more effective and superior to commercial PDMS and PDMS/DVD fibers in extracting pyrethroids in natural water samples. Under optimized conditions, the calibration curves were found to be linear from 0.001 to 10 mu g mL(-1) for five of the six pyrethroids studied, the exception being fenvalerate (which was from 0.005 to 10 mu g mL(-1)), and detection limits were within the range 0.12-0.43 ng mL(-1). The recoveries of the pyrethroids spiked in water samples at 10 ng mL(-1) ranged from 83 to 112%. (C) 2011 Elsevier B.V. All rights reserved.
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