期刊
ANALYTICAL METHODS
卷 5, 期 10, 页码 2602-2609出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ay40238j
关键词
-
资金
- Universiti Malaysia Pahang [UMP-RDU120372]
- Malaysia Technical University Network Centre of Excellence [MTUN-CoE-RDU121217]
- Universiti Malaysia Pahang Central Laboratory
A facile UV-Vis spectrophotometric method for quantitative determination of Al3+ ion based on chromophoric Alizarin Red S (ARS) was carried out. ARS reagent was used as an organic chelator for Al3+ ion to form ARS-Al(III) complex. The yellow-coloured ARS changed to reddish-orange hue after reaction with Al3+ ion and formed ARS-Al(III) complex at optimum pH 4. ARS reagent yielded linear concentration range over 0.1-1.0 ppm Al3+ ion and a fast response time of similar to 35 s. The reproducibility study for ARS-Al(III) complex was found to give satisfactory relative standard deviation (RSD) values of 2.4-3.1%. The ARS reagent demonstrated good photostability over an 8-hour experimental period. An attempt has been conducted to physically immobilize ARS reagent onto newly synthesized photocurable poly(n-butyl acrylate) [poly(nBA)] microspheres, followed by reflectometric transduction of ion recognition event. The micro-sized poly(nBA) spheres has been confirmed by scanning electron microscopy (SEM). The colour change of the immobilized ARS, i.e. before and after reaction with Al3+ ion was found to be similar to the ARS solution analysis at pH 4. The acrylic-based optical microsensor showed potential to accommodate both quantitative and semiquantitative in situ evaluation of Al3+ ion concentration in environmental water and biological fluids.
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