Simultaneous kinetic spectrophotometric determination of periodate and iodate based on their reaction with pyrogallol red in acidic media by chemometrics methods

被引：34

作者：

Ghasemi, J ^{[1
]}

Saaidpour, S

Ensafi, AA

机构：

[1] Razi Univ, Fac Sci, Dept Chem, Kermanshah, Iran

[2] Isfahan Univ Technol, Fac Chem, Analyt Chem Grp, Esfahan, Iran

来源：

ANALYTICA CHIMICA ACTA | 2004年 / 508卷 / 01期

关键词：

iodate; periodate; pyrogallol red; spectrophotometric; PLS; OSC-PLS;

D O I：

10.1016/j.aca.2003.11.059

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The univariate and multivariate calibration methods were applied for the simultaneous determination of iodate and periodate in water. The method is based on the reaction of periodate and iodate with pyrogallol red in sulfuric acid media. The reaction was monitored spectrophotometrically by measuring the decrease in absorbance of pyrogallol red at 470 nm. The calibration curve was linear over the concentration ranges of 0.1-12 and 0.1-14 mug ml(-1) for iodate and periodate, respectively. The experimental calibration matrix for partial least squares (PLS) and orthogonal signal correction (OSC-PLS) method was designed with 35 mixtures. The results obtained by the PLS and OSC-PLS were statistically compared. The effects of various cations and anions on iodate and periodate determination have been investigated. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：119 / 126

页数：8

共 24 条

[1] Kinetic determination of periodate based on its reaction with ferroin and its application to the indirect determination of ethylene glycol and glycerol [J].