用偏最小二乘法校准法同时分光光度法测定铁（III）、铝（III）和铜（II）。
Simultaneous spectrophotometric determination of Fe(III), Al(III) and Cu(II) by partial least-squares calibration method.
作者信息
Safavi A, Abdollahi H, Mirzajani R
机构信息
Department of Chemistry, College of Sciences, Shiraz University, Shiraz 71454, Iran.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2006 Jan;63(1):196-9. doi: 10.1016/j.saa.2005.05.004. Epub 2005 Jun 21.
A spectrophotometric method for simultaneous determination of Fe(III), Al(III) and Cu(II) using Alizarin Red S as a chelating agent was developed. The parameters controlling behavior of the system were investigated and optimum conditions were selected. A partial least-squares multivariate calibration method was used for the analysis of ternary mixtures of Fe(III), Al(III) and Cu(II) over the range of 450-6000, 140-4000 and 450-15000 ng ml(-1), respectively. Absorbance data were taken between 400 and 800 nm. Applying this method to simultaneous determination of these metal ions in several synthetic alloy solutions with total relative standard error of less than 5% validated the proposed method.
建立了一种以茜素红S作为螯合剂同时测定Fe(III)、Al(III)和Cu(II)的分光光度法。研究了控制该体系行为的参数并选择了最佳条件。采用偏最小二乘多元校准法分别对浓度范围为450 - 6000、140 - 4000和450 - 15000 ng ml(-1)的Fe(III)、Al(III)和Cu(II)三元混合物进行分析。在400至800 nm之间采集吸光度数据。将该方法应用于几种合成合金溶液中这些金属离子的同时测定，总相对标准误差小于5%，验证了该方法的有效性。
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