Polypyrrole nanowire as an excellent solid phase microextraction fiber for bisphenol A analysis in food samples followed by ion mobility spectrometry.
A polypyrrole nanowire coated fiber was prepared and used in head-space solid phase microextraction coupled with ion mobility spectrometry (HS-SPME-IMS) to the analysis of bisphenol A (BPA) in canned food samples, for the first time. This fiber was synthesized by electrochemical oxidation of the monomer in aqueous solution. The fiber characterization by scanning electron microscopy (SEM) revealed that the new fiber exhibited two-dimensional structures with a nanowire morphology. The effects of important extraction parameters on the efficiency of HS-SPME were investigated and optimized. Under the optimum conditions, the linearity of 10-150ngg(-1) and limit of detection (based on S/N=3) of 1ngg(-1) were obtained in BPA analysis. The repeatability (n=5) expressed as the relative standard deviation (RSD%) was 5.8%. At the end, the proposed method was successfully applied to determine BPA in various canned food samples (peas, corns, beans). Relative recoveries were obtained 93-96%. Method validation was conducted by comparing our results with those obtained through HPLC with fluorescence detection (FLD). Compatible results indicate that the proposed method can be successfully used in BPA analysis. This method is simple and cheaper than chromatographic methods, with no need of extra organic solvent consumption and derivatization prior to sample introduction.
Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
Mahdie
M
Kamalabadi
Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abdorreza
A
Mohammadi
Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran. Electronic address: alizaden@modares.ac.ir.
Naader
N
Alizadeh
D001559:Benzhydryl Compounds / Q000032:analysis* / Q000302:isolation & purification; D002273:Carcinogens / Q000032:analysis* / Q000302:isolation & purification; D005504:Food Analysis / Q000379:methods; D005506:Food Contamination / Q000032:analysis; D057141:Food, Preserved / Q000032:analysis*; D000075663:Ion Mobility Spectrometry / Q000379:methods*; D057230:Limit of Detection; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure; D010636:Phenols / Q000032:analysis* / Q000302:isolation & purification; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D052617:Solid Phase Microextraction / Q000379:methods*; D013696:Temperature; D000098826:Bisphenol A Compounds
D001559:Benzhydryl Compounds; D002273:Carcinogens; D010636:Phenols; D011108:Polymers; D011758:Pyrroles; C067635:polypyrrole; C006780:bisphenol A; D000098826:Bisphenol A Compounds
Bisphenol A; Canned food samples; Head-space solid phase microextraction; Ion mobility spectrometry; Nanowire; Polypyrrole