KINETICS OF GAS-PHASE REACTIONS IN FLAMELESS ATOMIZATION

被引：23

作者：

HOLCOMBE, JA

EKLUND, RH

SMITH, JE

机构：

[1] Department of Chemistry, University of Texas at Austin, Austin

来源：

ANALYTICAL CHEMISTRY | 1979年 / 51卷 / 08期

关键词：

D O I：

10.1021/ac50044a025

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Observed interference effects in atomic spectral techniques employing a flameless atomizer may result from gas phase reactions between analyte and interferent species. Equilibrium (or thermodynamic) control may not adequately characterize the extent of the reaction. At partial pressures encountered in these systems, reaction kinetics may play a significant role in predicting the degree to which the analyte and the interferent react. “Steady state ” and pulsed atomization of Sn, Ga, Fe, and Cu analytes into an Ar sheath containing trace amounts of O2 are used to analyze the time and height-dependent absorbance data resulting from the respective metal/oxygen reactions. Explanations of the resulting curves based on reaction kinetics are presented. © 1979, American Chemical Society. All rights reserved.

引用

页码：1205 / 1209

页数：5

共 22 条

[1] ATOMIC ABSORPTION AND FLUORESCENCE SPECTROSCOPY WITH A CARBON FILAMENT ATOM RESERVOIR .4. DETERMINATION OF GOLD BY ATOMIC FLUORESCENCE AND ATOMIC ABSORPTION SPECTROSCOPY WITH AN UNENCLOSED ATOM RESERVOIR [J].