مشخصات پژوهش

عنوان	Speciation of Fe(II) and Fe(III) by using Dispersive Liquid‑Liquid Microextraction and Flame Atomic Absorption Spectrometry
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	dispersive liquid-liquid microextraction, Fe(II), Fe(III), flame atomic absorption spectrometry, water samples
چکیده	An extraction method for Fe(III) from water sample before spectrometric determination was developed. Dispersive liquid-liquid microextraction (DLLME) technique was successfully used as sample preparation method for flame atomic absorption spectrometry (FAAS). In the proposed approach, 8-hydroxy quinoline (oxine) was used as chelating agent, chloroform and methanol were selected as extraction and dispersive solvents, respectively. Some factors influencing the extraction efficiency of Fe(III) and its subsequent determination were studied and optimized, including: type and volume of extraction and dispersive solvents, pH of sample solution, concentration of the chelating agent and extraction time. Under the optimized conditions, the enrichment factor of this method for Fe(III) was 462. The limit of detection for Fe(III) was 4.5 ng mL-1, and the relative standard deviation (RSD) 1.4% (n = 5, c = 400 ng mL-1).
پژوهشگران	رضیه زاکریان (نفر دوم)، سلیمان بهار (نفر اول)