NITROGEN-SELECTIVE DETECTION FOR GAS-CHROMATOGRAPHY WITH A HELIUM RADIOFREQUENCY PLASMA DETECTOR - INVITED LECTURE

被引：8

作者：

WU, MG ^{[1
]}

LEE, ML ^{[1
]}

FARNSWORTH, PB ^{[1
]}

机构：

[1] BRIGHAM YOUNG UNIV,DEPT CHEM,PROVO,UT 84602

来源：

JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY | 1992年 / 7卷 / 02期

关键词：

GAS CHROMATOGRAPHY; ELEMENT-SELECTIVE DETECTOR; NITROGEN;

D O I：

10.1039/ja9920700197

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A helium r.f. plasma was characterized for the selective detection of nitrogen in gas chromatographic eluents by atomic emission spectrometry. Nitrogen emission was detected at 868 nm. The principle sources of background emission at that wavelength were identified. The largest single source was back-diffusion from the discharge exit. There were also significant contributions from impurities in the high-grade make-up and reagent gases. An avalanche photodiode was evaluated as a photodetector and found to be superior to a photomultiplier tube for this application. End-on and side-on optical collection geometries were modelled by a computer. The detection limit for nitrogen in the discharge was 57 pg s-1.

引用

页码：197 / 200

页数：4

共 11 条

[1]

BRENNER KS, 1978, J CHROMATOGR, V167, P365, DOI 10.1016/S0021-9673(00)91170-1

[2] DIRECTLY COUPLED CHROMATOGRAPHY - ATOMIC SPECTROSCOPY .1. DIRECTLY COUPLED GAS-CHROMATOGRAPHY - ATOMIC SPECTROSCOPY - A REVIEW [J].