ELECTROTHERMAL ATOMIC-ABSORPTION INTERFERENCE STUDIES USING A WIRE LOOP ATOMIZER

被引：10

作者：

CHAUVIN, JV ^{[1
]}

DAVIS, DG ^{[1
]}

HARGIS, LG ^{[1
]}

机构：

[1] UNIV NEW ORLEANS,DEPT CHEM,NEW ORLEANS,LA 70148

来源：

ANALYTICAL LETTERS | 1992年 / 25卷 / 01期

关键词：

ATOMIC ABSORPTION; ATOMIZER; INTERFERENCE STUDIES; SPECTROSCOPY; WIRE LOOP;

D O I：

10.1080/00032719208020015

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A W-Re wire-loop atomizer has been used to study interference effects caused by diverse compounds in the ETAAS determination of Cu, Cd, Mg, and Be. Absorbance-time profiles of both the analyte and the diverse metal were studied. In most cases, overlap of the AA signal of the diverse metal with that of the analyte depressed the analyte's signal. The major mode of suppression appears to be the formation of analyte compounds, such as oxides or chlorides, in the vapor phase. Shifts in appearance temperature were also observed, especially in the case of Cd, which was the most volatile metal studied. The addition of sulfate increased the appearance temperature of Cu and decreased or eliminated the suppression caused by Na and K salts.

引用

页码：137 / 149

页数：13

共 30 条

[1] ATOMIC ABSORPTION AND FLUORESCENCE SPECTROSCOPY WITH A CARBON FILAMENT ATOM RESERVOIR .6. STUDY OF SOME MATRIX EFFECTS [J].