title: Quantitation of tetrabromobisphenol-A from dust sampled on consumer electronics by dispersed liquid-liquid microextraction.
abstract: Tetrabromobisphenol-A (TBBPA) is a brominated flame retardant used worldwide. Despite its widespread use, there are few data concerning environmental concentrations of TBBPA. Thus, the objective of this work was to optimize an ultrasound-assisted dispersed liquid-liquid microextraction (DLLME) method to analyze swabbed surfaces of consumer electronics to determine TBBPA concentrations. Upon sample preparation with DLLME, TBBPA was derivatized with acetic anhydride and then analyzed by gas chromatography-mass spectrometry (GC/MS). Using a (13)C12-TBBPA internal standard to improve precision and quantitation, a recovery study was performed. At concentrations of 250-1000 ng/mL, recoveries were 104-106%. Sample preparation with solid phase extraction had comparable recoveries, although overall, improved analyte recovery and precision were achieved with DLLME. In a small survey study, TBBPA concentrations in dust collected from 100 cm(2) areas on electronic surfaces (monitor, microwave, refrigerator, and TV) were determined to range from less than the LOQ to 523 ng/mL.
authors.affiliation: Department of Chemistry and Biochemistry, University of Colorado Colorado Springs, 1420 Austin Bluffs Parkway, Colorado Springs, CO 80918, USA.
authors.forename: Gina
authors.initials: G
authors.lastname: Di Napoli-Davis
authors.forename: Janel E
authors.initials: JE
authors.lastname: Owens
mesh_terms: D004391:Dust / Q000032:analysis*; D055615:Electrical Equipment and Supplies; D004784:Environmental Monitoring; D005411:Flame Retardants / Q000032:analysis*; D015386:Hazardous Substances / Q000032:analysis*; D059627:Liquid Phase Microextraction; D011075:Polybrominated Biphenyls / Q000032:analysis*
chemical_list: D004391:Dust; D005411:Flame Retardants; D015386:Hazardous Substances; D011075:Polybrominated Biphenyls; C020806:tetrabromobisphenol A
keywords: Brominated flame retardant; Dust; Tetrabromobisphenol-A