FLOW-INJECTION ONLINE CO-APDC COPRECIPITATION PRECONCENTRATION AND DETERMINATION OF LEAD AND COPPER IN SEAWATER WITH GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROMETRY

被引：0

作者：

ZHUANG, ZX ^{[1
]}

WANG, XR ^{[1
]}

YANG, PY ^{[1
]}

YANG, CL ^{[1
]}

HUANG, BL ^{[1
]}

机构：

[1] XIAMEN UNIV,DEPT CHEM,XIAMEN,PEOPLES R CHINA

来源：

CANADIAN JOURNAL OF APPLIED SPECTROSCOPY | 1994年 / 39卷 / 04期

关键词：

D O I：

暂无

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A method of the flow-injection (FI), on-line, CoAPDC coprecipitation for the preconcentration and determination of Pb and Cu in seawater with graphite furnace atomic absorption spectrometry (GFAAS) has been developed. A precipitate collector consisting of a PTFE membrane on a polypropylene support filtering cup combined with an autosampler for a graphite furnace was designed. MIBK was used as for FI, on-line, dissolution of Co-APDC coprecipitation. Graphite furnace atomic absorption spectrometric determination of the analyte was performed in parallel with the preconcentration of the next sample. Enrichment factors of 26 for lead and copper were attained using 30 s precipitate collection time, at a sample flow rate of 5 mL/min. The detection limits (3sigma) were 0.005 and 0.001 mug/L for lead and copper, and the RSDs were 4.8% and 3.2%, respectively. Recoveries of lead and copper in seawater were 94%. The technique has been applied to seawater sample analysis.

引用

页码：101 / 107

页数：7

共 14 条

[1] DETERMINATION OF TRACES OF COPPER IN TAP WATER, IRON AND STEELS BY ELECTROTHERMAL ZEEMAN ATOMIC-ABSORPTION SPECTROMETRY WITH A GRAPHITE CUPPED FURNACE [J].