title: Dispersive Liquid-Liquid Microextraction of Bismuth in Various Samples and Determination by Flame Atomic Absorption Spectrometry.
abstract: A dispersive liquid-liquid microextraction method for the determination of bismuth in various samples by flame atomic absorption spectrometry is described. In this method, crystal violet was used as counter positive ion for BiCl4 (-) complex ion, chloroform as extraction solvent, and ethanol as disperser solvent. The analytical parameters that may affect the extraction efficiency like acidity of sample, type and amount of extraction and disperser solvents, amount of ligand, and extraction time were studied in detail. The effect of interfering ions on the analyte recovery was also investigated. The calibration graph was linear in the range of 0.040-1.00 mg L(-1) with detection limit of 4.0 μg L(-1) (n = 13). The precision as relative standard deviation was 3% (n = 11, 0.20 mg L(-1)) and the enrichment factor was 74. The developed method was applied successfully for the determination of bismuth in various water, pharmaceutical, and cosmetic samples and the certified reference material (TMDA-64 lake water).
authors.affiliation: Gemerek Vocational High School, Department of Food Technology, Cumhuriyet University, 58840 Sivas, Turkey.
authors.forename: Teslima
authors.initials: T
authors.lastname: Daşbaşı
authors.affiliation: Department of Chemistry, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Şenol
authors.initials: Ş
authors.lastname: Kartal
authors.affiliation: Department of Chemistry, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Şerife
authors.initials: Ş
authors.lastname: Saçmacı
authors.affiliation: Department of Chemistry, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Ülgen