Yilmaz Vedat, Kartal Senol
Department of Analytical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey.
Anal Sci. 2012;28(5):515-21. doi: 10.2116/analsci.28.515.
A new chelating resin was synthesized by immobilizing 1-(2-thiazolylazo)-2-naphthol through the -N=N- group on Amberlite XAD-1180. The resin was used for the preconcentration of Cd(II), Co(II), Cu(II), Mn(II), Ni(II), and Pb(II) ions and their determination by flame atomic absorption spectrometry (FAAS). The influences of some analytical parameters, such as the pH, volume of the sample, flow rates of the sample and eluent, matrix components, amount of the resin, and amount and type of the eluent on the recovery, were investigated. Those metals retained on the resin at pH 8.5 were eluted with 25 mL of 2 mol L(-1) HNO(3). The sorption capacity of the resin was determined, except for Pb(II). The recoveries were found to be ≥95%, and the relative standard-deviation values were ≤4.3%. The detection limits were in the range of 0.1 - 3.6 µg L(-1). For the accuracy of the method, the analysis of a certified reference material was performed. This method was applied to environmental water samples.
通过将1-(2-噻唑基偶氮)-2-萘酚通过-N=N-基团固定在Amberlite XAD-1180上合成了一种新型螯合树脂。该树脂用于Cd(II)、Co(II)、Cu(II)、Mn(II)、Ni(II)和Pb(II)离子的预富集，并通过火焰原子吸收光谱法(FAAS)进行测定。研究了一些分析参数，如pH值、样品体积、样品和洗脱液的流速、基体成分、树脂用量、洗脱液用量和类型对回收率的影响。在pH 8.5时保留在树脂上的那些金属用25 mL 2 mol L(-1) HNO(3)洗脱。测定了该树脂的吸附容量，但Pb(II)除外。回收率≥95%，相对标准偏差值≤4.3%。检测限在0.1 - 3.6 µg L(-1)范围内。为验证该方法的准确性，对一种有证标准物质进行了分析。该方法应用于环境水样的分析。
