title: Homogeneous liquid-liquid extraction coupled to ion mobility spectrometry for the determination of p-toluidine in water samples.
abstract: In this research, homogeneous liquid-liquid extraction followed by ion mobility spectrometry (HLLE-IMS) with corona discharge ionization source has been developed for the determination of p-toluidine. The analyte was extracted by single-phase extraction in a ternary solvent system and then the extracted p-toluidine was injected into IMS for analysis. Optimization of different parameters which could influence HLLE-IMS was performed. Under optimum conditions, the dynamic linear range was obtained over 2.0-40.0 ng/mL with R (2) = 0.9966 while relative standard deviation was below 10 %. The limits of detection and quantification were 0.6 and 2.0 ng/mL of p-toluidine, respectively. The proposed method was applied to determine p-toluidine in environmental water samples which resulted in acceptable recoveries of the analyte, ranging from 85.3 %-90 %.
authors.affiliation: Department of Chemistry, Yazd Branch, Islamic Azad University, Yazd, Iran.
authors.forename: Amin
authors.initials: A
authors.lastname: Ashori
authors.forename: Ali
authors.initials: A
authors.lastname: Sheibani
mesh_terms: D007477:Ions; D059625:Liquid-Liquid Extraction / Q000379:methods*; D012997:Solvents / Q000737:chemistry; D013057:Spectrum Analysis / Q000379:methods; D014052:Toluidines / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D007477:Ions; D012997:Solvents; D014052:Toluidines; D014874:Water Pollutants, Chemical; C029370:4-toluidine