On-line preconcentration with different solid adsorbents for lead determination

被引：27

作者：

da Silva, JBB

Quináia, SP

Rollemberg, MCE ^{[1
]}

机构：

[1] UEM, Dept Quim, BR-87020900 Marinaga, PR, Brazil

[2] Unictr, Dept Quim, BR-85000000 Guarapuava, PR, Brazil

[3] UFMG, Dept Quim, BR-31270901 Belo Horizonte, MG, Brazil

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 2001年 / 369卷 / 7-8期

关键词：

D O I：

10.1007/s002160100767

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An on-line column preconcentration method based on the combined use of ammonium O,O-diethyldithiophosphate and activated carbon or polyurethane foam as adsorbents has been developed for the determination of Pb in water samples. The complexed Pb was eluted with ethanol and determined by flame atomic absorption spectrometry, The optimum preconcentration conditions an given for each adsorbent. The enrichment factors were 63 and 294, and the detection limits (3 sigma) 3 mu gL(-1) and 0.8 mug L-1, respectively, for the carbon and foam systems. When the optimized procedures were applied to the determination of Pb in water samples the recovery efficiency was > 96%.

引用

页码：657 / 660

页数：4

共 22 条

[1] COLUMN SOLID-PHASE EXTRACTION AS PRECONCENTRATION METHOD FOR TRACE-ELEMENT DETERMINATION IN OXALIC-ACID BY ATOMIC-ABSORPTION SPECTROMETRY AND INDUCTIVELY-COUPLED PLASMA-ATOMIC EMISSION-SPECTROMETRY [J].