SPECTROPHOTOMETRIC DETERMINATION OF RARE-EARTH ELEMENTS BY FLOW-INJECTION ANALYSIS BASED ON THEIR REACTION WITH XYLENOL ORANGE AND CETYLPYRIDINIUM BROMIDE

被引：22

作者：

HAVEL, J ^{[1
]}

MORENO, C ^{[1
]}

HRDLICKA, A ^{[1
]}

VALIENTE, M ^{[1
]}

机构：

[1] UNIV AUTONOMA BARCELONA,E-08193 BARCELONA,SPAIN

来源：

TALANTA | 1994年 / 41卷 / 08期

关键词：

D O I：

10.1016/0039-9140(93)E0044-E

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Individual rare earth elements (REE) and their mixtures were determined by a FIA method based on the reaction with Xylenol Orange (XO) in the presence of cetylpyridinium bromide (CPB). Volumes of 30 mul of 2.5-25 muM REE solutions were injected into a carrier stream of 0.1M acetate buffer of pH 4.5 or 5.5 that was 0.06 mM in XO and 0.6 mM in CPB. At 1.8 ml/min flow rate, a sampling frequency of up to 100 samples per hour was achieved. The detection limits were in the range of 0.1-0.4 mug/ml REE and relative standard deviation of the measurement was 0.88% rel.

引用

页码：1251 / 1254

页数：4

共 9 条

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[2]

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