Stopped-flow injection liquid-liquid extraction spectrophotometric determination of palladium in airborne particulate matter and automobile catalysts

被引：95

作者：

Anthemidis, AN ^{[1
]}

Themelis, DG ^{[1
]}

Stratis, JA ^{[1
]}

机构：

[1] Aristotelian Univ Salonika, Dept Chem, Analyt Chem Lab, GR-54006 Salonika, Greece

来源：

TALANTA | 2001年 / 54卷 / 01期

关键词：

palladium; flow-injection; extraction; airborne particulate matter; automobile catalysts;

D O I：

10.1016/S0039-9140(00)00620-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A stopped-flow injection liquid-liquid extraction (SF-EX-FIA) spectrophotometric method is reported for the determination of palladium(II), using the 2,2'-dipyridyl-2-pyridylhydrazone (DPPH) as a color forming reagent. The colored complex Pd(II)-DPPH was extracted in CHCl3 and the absorbance was monitored at 560 nm. An injection valve was used as a commutator in order to combine the stopped-flow technique with liquid-liquid extraction FI system. The calibration graph was linear up to 12 mg l(-1) (s(r) = 0.27%; r = 0.9999) with a detection limit of c(L) = 0.007 mg l(-1). The sampling rate was 20 injections per hour. The proposed method has been successfully applied to the determination of palladium in airborne particulate matter (APM) and in automobile exhaust gas converter catalysts. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：37 / 43

页数：7

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