Visual observations of an atmospheric-pressure solution-cathode glow discharge

被引：73

作者：

Schwartz, Andrew J. ^{[1
]}

Ray, Steven J. ^{[1
]}

Elish, Eyal ^{[1
,2
]}

Storey, Andrew P. ^{[1
]}

Rubinshtein, Arnon A. ^{[1
,2
]}

Chan, George C. -Y. ^{[1
]}

Pfeuffer, Kevin P. ^{[1
]}

Hieftje, Gary M. ^{[1
]}

机构：

[1] Indiana Univ, Dept Chem, Bloomington, IN 47405 USA

[2] Nucl Res Ctr Negev, IL-84190 Beer Sheva, Israel

来源：

TALANTA | 2012年 / 102卷

关键词：

Schlieren imaging; Solution cathode glow discharge; Atomic emission spectrometry; Multielement analysis; EMISSION; SURFACE; ION;

D O I：

10.1016/j.talanta.2012.07.096

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The solution-cathode glow discharge (SCGD) is an optical emission source for atomic spectrometry comprised of a moderate-power atmospheric-pressure DC glow discharge sustained directly upon the surface of an electrically conductive solution. The SCGD boasts a simple, inexpensive design and has demonstrated detection limits similar to those of more conventional excitation sources used in atomic spectrometry. Although the analytical performance of the SCGD as an optical emission source is well characterized, the mechanism through which the discharge atomizes and excites analyte from the sample solution remains a point of debate. The current paper presents visual observations of the SCGD from a variety of imaging techniques. The implications of the images regarding the mechanism of analyte solution-to-plasma transport and excitation in the SCGD are discussed. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：26 / 33

页数：8

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