DETERMINATION OF TRACE AMOUNTS OF GOLD IN WASTE-WATER BY GRAPHITE-FURNACE ATOMIC-ABSORPTION SPECTROPHOTOMETRY WITH PRECONCENTRATION ON TRIOCTYLPHOSPHINE OXIDE CHEMICALLY MODIFIED TUNGSTEN WIRE MATRIX

被引：14

作者：

LU, GH

XU, JY

XU, TM

JIN, LT

FANG, YZ

机构：

[1] ZHE JIANG NORMAL UNIV,DEPT CHEM,HANGZHOU,PEOPLES R CHINA

[2] E CHINA NORMAL UNIV,DEPT CHEM,SHANGHAI,PEOPLES R CHINA

来源：

TALANTA | 1992年 / 39卷 / 01期

关键词：

D O I：

10.1016/0039-9140(92)80049-J

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Preconcentration on a trioctylphosphine oxide (TOPO) chemically modified tungsten wire matrix followed by graphite furnace atomic-absorption spectrophotometry measurement is described for the determination of trace gold in waste water. The TOPO modified tungsten wire matrix, after accumulating the gold, is placed in a graphite cup for direct atomization and measurement. Under the selected conditions, the absorbance is proportional to the concentration of gold over the range 0.4-18 ng/ml and the detection limit is 0.2 ng/ml. This method is sensitive and convenient. It has been applied to some waste waters with satisfactory results.

引用

页码：51 / 53

页数：3

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