Low pressure ion chromatography with a low cost paired emitter-detector diode based detector for the determination of alkaline earth metals in water samples

被引：39

作者：

Barron, Leon ^{[1
]}

Nesterenko, Pavel N. ^{[1
]}

Diamond, Dermot ^{[1
]}

O'Toole, Martina ^{[1
]}

Lau, King Tong ^{[1
]}

Paull, Brett ^{[1
]}

机构：

[1] Dublin City Univ, Sch Chem Sci, Natl Ctr Sensor Res, Dublin 9, Ireland

来源：

ANALYTICA CHIMICA ACTA | 2006年 / 577卷 / 01期

基金：

爱尔兰科学基金会;

关键词：

low pressure ion chromatography; alkaline earth metals; post-column reaction; paired emitter-detector diode detector;

D O I：

10.1016/j.aca.2006.05.101

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The use of a low pressure ion chromatograph based upon short (25 mm x 4.6 mm) surfactant coated monolithic columns and a low cost paired emitter-detector diode (PEDD) based detector, for the determination of alkaline earth metals in aqueous matrices is presented. The system was applied to the separation of magnesium, calcium, strontium and barium in less than 7 min using a 0.15 M KCl mobile phase at pH 3, with post-column reaction detection at 570 nm using o-cresolphthalein complexone. A comparison of the performance of the PEDD detector with a standard laboratory absorbance detector is shown, with limits of detection for magnesium and calcium using the low cost PEDD detector equal to 0.16 and 0.23 mg L-1, respectively. Finally, the developed system was used for the determination of calcium and magnesium in a commercial spring water sample. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：32 / 37

页数：6

共 10 条

[1] Rapid, low pressure, and simultaneous ion chromatography of common inorganic anions and cations on short permanently coated monolithic columns [J].