Department of Chemistry, Faculty of Arts and Sciences, Erciyes University, TR-38039, Kayseri, Turkey.
Talanta. 2010 Mar 15;80(5):2127-31. doi: 10.1016/j.talanta.2009.11.019. Epub 2009 Nov 12.
An on-line preconcentration procedure for the determination of bismuth by flame atomic absorption spectrometry (FAAS) has been described. Lewatit TP-207 chelating resin, including iminodiacetate group, packed in a minicolumn was used as adsorbent material. Bi(III) was sorbed on the chelating resin, from which it could be eluted with 3 mol L(-1) HNO(3) and then introduced directly to the nebulizer-burner system of FAAS. Best preconcentration conditions were established by testing different resin quantities, acidity of sample, types of eluent, sample and eluent solution volumes, adsorption and elution flow rates, and effect of interfering ions. The detection limit of the method was 2.75 microg L(-1) while the relative standard deviation was 3.0% for 0.4 microg mL(-1) Bi(III) concentration. The developed method has been applied successfully to the determination of bismuth in pharmaceutical cream, standard reference materials and various natural water samples with satisfactory results.
本文描述了一种在线预浓缩程序，用于火焰原子吸收光谱法（FAAS）测定铋。Lewatit TP-207 螯合树脂，包含亚氨二乙酸基团，填充在微型柱中，用作吸附材料。Bi(III)被螯合树脂吸附，然后可以用 3 mol L(-1) HNO(3)洗脱，并直接引入 FAAS 的雾化器-燃烧器系统。通过测试不同的树脂量、样品酸度、洗脱剂类型、样品和洗脱剂溶液体积、吸附和洗脱流速以及干扰离子的影响，确定了最佳的预浓缩条件。该方法的检测限为 2.75 μg L(-1)，对于 0.4 μg mL(-1) Bi(III)浓度，相对标准偏差为 3.0%。该方法已成功应用于药物乳膏、标准参考物质和各种天然水样中铋的测定，结果令人满意。
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