期刊
TALANTA
卷 58, 期 2, 页码 289-300出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0039-9140(02)00248-5
关键词
separation and preconcentration; trace heavy metal ions; modified silica; natural waters
The complexes formed between IE11 and Cd(11), Cr(111), Cu(11), Mn(11) and Pb(11) were identified and confirmed by IR, UV and pH-metric titration. The uptake behavior of porous silica modified with N-propylsalicylaldimine (IE11) and these metal ions were studied. Log kd was found to be within the range 2.19-5.16 depending on pH and time of stirring. IE11 was used in the separation and preconcentration of Cd(11), Cr(111, VI), Cu(11), Mn(11, VII) and Pb(II) from some natural water samples. Data were compared with those obtained by the solvent extraction method APDC/MIBK. The proposed methodology allows to verify an improvement in the water quality of Nile River probably attributed to high to moderate floods in the last few years. The method was found to be accurate and not subject to random error, i.e. precise. (C) 2002 Elsevier Science B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据