title: Electropolymerized multiwalled carbon nanotubes/polypyrrole fiber for solid-phase microextraction and its applications in the determination of pyrethroids.
abstract: 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 μg mL(-1) for five of the six pyrethroids studied, the exception being fenvalerate (which was from 0.005 to 10 μg 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%.
authors.affiliation: Department of Chemistry and Environment Engineering, Wuyi University, Fujian 354300, China.
authors.forename: Liangbi
authors.initials: L
authors.lastname: Chen
authors.forename: Wenfeng
authors.initials: W
authors.lastname: Chen
authors.forename: Chunhua
authors.initials: C
authors.lastname: Ma
authors.forename: Dan
authors.initials: D
authors.lastname: Du
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D004563:Electrochemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000737:chemistry*; D011722:Pyrethrins / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D011758:Pyrroles / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*; D013193:Stainless Steel / Q000737:chemistry; D013499:Surface Properties; D014867:Water / Q000737:chemistry
chemical_list: D037742:Nanotubes, Carbon; D011108:Polymers; D011722:Pyrethrins; D011758:Pyrroles; D014867:Water; D013193:Stainless Steel; C067635:polypyrrole