An atmospheric pressure dc glow discharge on a microchip and its application as a molecular emission detector

被引：77

作者：

Eijkel, JCT

Stoeri, H

Manz, A ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, SmithKline Beecham Ctr Analyt Sci, Zeneca Pharmaceut, London SW7 2AY, England

[2] Vienna Tech Univ, Inst Allgemeine Phys, A-1040 Vienna, Austria

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 2000年 / 15卷 / 03期

关键词：

D O I：

10.1039/a909238b

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Scaling theory for direct current glow discharges predicts that normal discharges can exist at atmospheric pressure in microscale discharge tubes. The validity of this theory is demonstrated by the creation of an atmospheric helium plasma in a nanoliter-size discharge chamber on a microchip. It is shown that the microchip plasma can be successfully applied for molecular emission detection. It exhibits a low detection (10(-14) g s(-1)) limit for methane with a calibration curve that is linear over two decades. Simple instrumentation, small detector size and good sensitivity make the device highly suitable for integration in micro-analysis systems.

引用

页码：297 / 300

页数：4

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