FACTORS INFLUENCING ION SIGNAL PROFILES IN PULSED GLOW-DISCHARGE MASS-SPECTROMETRY

被引：76

作者：

KLINGLER, JA ^{[1
]}

BARSHICK, CM ^{[1
]}

HARRISON, WW ^{[1
]}

机构：

[1] UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611

来源：

ANALYTICAL CHEMISTRY | 1991年 / 63卷 / 22期

关键词：

D O I：

10.1021/ac00022a007

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Ionization mechanisms responsible for the formation of prepeaks and afterpeaks on ion signals observed in pulsed glow discharges and potential analytical use of pulsed glow-discharge mass spectrometry have been investigated. The formation of a prepeak at the beginning of the pulse is related to the ionization efficiency of electrons accelerated across the cathode fall region. The appearance of an afterpeak at the termination of the discharge is associated with the energy, population, and ionization efficiency of metastable discharge gas atoms. As a result of the differences in pulse profiles, ft is possible to acquire data over specific regions of the pulse that permit discrimination against interfering signals in the mass spectrum.

引用

页码：2571 / 2576

页数：6

共 22 条

[1]

ADAMSON AW, 1976, PHYSICAL CHEM SURFAC, P548

[2] COMPARISON OF ATOMIC FLUORESCENCE WITH ATOMIC-ABSORPTION AS AN ANALYTICAL TECHNIQUE [J].