title: Electrosorption-enhanced solid-phase microextraction using activated carbon fiber for determination of aniline in water.
abstract: Electrosorption-enhanced solid-phase microextraction (EE-SPME) based on activated carbon fiber (ACF) was developed for determination of aniline in aqueous solution. A porous ACF, served as working electrode in electrosorption procedure, was prepared and attached to a commercial manual SPME device. Parameters affecting the adsorption efficiency were investigated. Under optimized condition, which was 400 mV electrosorption potential, 0.01 M Na(2)SO(4) electrolyte, pH 7, and electrosorption at 40 degrees C for 10 min, the method exhibited wide linear range (0.1-100 microg L(-1), R(2)=0.9980), good repeatability of adsorption (RSD 6.15%, n=6), and low detection limit (0.02 microg L(-1)). The feasibility of the method was evaluated by analyzing lake water spiked with aniline. Comparison was made with direct immersion (DI) ACF-SPME without electrosorption enhancement. The proposed procedure was demonstrated to be a simple, fast, sensitive sample preparation method for determination of aniline in water samples.
authors: College of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Rd., Minhang, Shanghai 200240, China.
authors: Xiaolan
authors: X
authors: Chai
authors: Yi
authors: Y
authors: He
authors: Diwen
authors: D
authors: Ying
authors: Jinping
authors: J
authors: Jia
authors: Tonghua
authors: T
authors: Sun
mesh_terms: D000814:Aniline Compounds / Q000032:analysis*; D002244:Carbon; D000077482:Carbon Fiber; D002849:Chromatography, Gas / Q000379:methods*; D015203:Reproducibility of Results; D052617:Solid Phase Microextraction / Q000295:instrumentation* / Q000379:methods*; D014867:Water / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000302:isolation & purification
chemical_list: D000814:Aniline Compounds; D000077482:Carbon Fiber; D014874:Water Pollutants, Chemical; D014867:Water; D002244:Carbon; C023650:aniline