Chemiluminescence flow system for the determination of Fe(II) and Fe(III) in water

被引：48
|
作者：
Qin, W
Zhang, ZJ [1 ]
Wang, FC
机构：
[1] Shaanxi Normal Univ, Dept Chem, Xian 710062, Peoples R China
[2] Nanjing Univ, Dept Chem, Nanjing 210008, Peoples R China
[3] SW Normal Univ, Dept Chem, Chongqing 630715, Peoples R China
来源：
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1998年 / 360卷 / 01期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1007/s002160050659
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A novel chemiluminescence (CL) flow system has been developed for the sequential determination of Fe(II) and Fe(III) in water. Fe(LT) was detected by its catalytic effect on the CL reaction between luminol immobilized on an anion exchange resin column and dissolved oxygen; Fe(III) was determined by difference measurement after on-line conversion to Fe(II) in a reducing mini-column packed with Cu plated Zn granules. For both ions, the calibration graph was linear in the range 1 x 10(-9) to 1 x 10(-6) g/mL, and the detection limit was 4 x 10(-10) g/mL. A complete analysis could be performed in 1.5 min with a relative standard deviation of less than 5%. The system could be reused for over 200 times and has been applied successfully to the determination of Fe(II) and Fe(III) in natural water samples.
引用
收藏
页码：130 / 132
页数：3
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