Glow discharge atomic emission spectroscopy and apparatus thereo

Details Glow discharge atomic emission spectroscopy and apparatus thereo Glow discharge atomic emission spectroscopy and apparatus thereo

1991-03-18

1992-12-15

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356313, G01N 2166

Patent

active

051721830

ABSTRACT:
An improved glow discharge atomic emission spectroscopy method and apparatus is offered in which the introduction of a rare gas into a glow discharge tube is temporarily cut off and after the inside of the glow discharge tube is maintained at a higher degree of vacuum, a preliminary discharge is executed to remove adsorbed or extraneous substances on the specimen surface, and then the analysis of the specimen surface is performed. The method and the apparatus described in the above are suitable for quick and simple analysis of the uppermost surface layer of a solid specimen in the direction of depth.

REFERENCES:
Waitlevertch et al., Applied Spectroscopy, vol. 30, No. 5, pp. 510-515 Sep.-Oct. 1976.
Iron and Steel (Japan), vol. 69 (1983), No. 10, pp. 1344-1349, Ohashi et al., "Surface Analysis of Steels by Modified Glow Discharge Spectrometry".

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