Sulfonated polyvinyl chloride fibers for cation-exchange microextraction.
Polyvinyl chloride (PVC) fiber was derivatized by concentrated sulfuric acid to yield sulfonated PVC (PVC-SO3H). The PVC-SO3H fiber had dual properties as a sorbent, based on cation-exchange and hydrophobicity. In the present study, the novel fiber was used directly as an individual device for extraction purposes in the cation-exchange microextraction of anaesthetics, followed by high-performance liquid chromatography-UV analysis. The results demonstrated that this PVC-SO3H fiber-based microextraction afforded convenient operation and cost-effective application to basic analytes. The limits of detection for four anaesthetics ranged from 1.2 to 6.0 ng/mL. No carryover (because of its disposable usage), and no loss of sorbent phase (which normally occurs in stir-bar sorptive extraction) during extraction were observed.
Xu
Li
L
College of Pharmacy, Tongji Medical Center, Huazhong University of Science and Technology, Wuhan 430030, China.
Lee
Hian Kee
HK
D000777:Anesthetics / Q000737:chemistry; D011143:Polyvinyl Chloride / Q000737:chemistry*; D012117:Resins, Synthetic / Q000737:chemistry*; D052616:Solid Phase Extraction / Q000191:economics / Q000295:instrumentation* / Q000379:methods*; D013464:Sulfuric Acids / Q000737:chemistry
D000777:Anesthetics; D012117:Resins, Synthetic; D013464:Sulfuric Acids; D011143:Polyvinyl Chloride; C033158:sulfuric acid