Device for atomization of a sample

Details Device for atomization of a sample Device for atomization of a sample

1975-08-28

1976-09-28

Corbin, John K.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356244, G01J 330, G01N 2116

Patent

active

039828344

ABSTRACT:
A heated graphite sample-atomizer for flameless atomic absorption spectroscopy in which a graphite sample tube is coaxially disposed within a pair of generally cylindrical electrode members which jointly envelope substantially the entire tube and define therewith a cylindrical flow passage for inert gas. The electrode members make electrical contact with respective ends of the tube to enable passage of a heating current therethrough. At least the outer end portions of the electrode members are telescoped within respective cooling jackets, the external cylindrical surfaces of the electrode members making a snug fit with complementary internal cylindrical surfaces of the cooling jackets at room temperature. The respective thermal expansion coefficients of the materials of the electrode members and cooling jackets are such as to create a press fit between the electrode members and cooling jackets under operating conditions.

REFERENCES:
patent: 3702219 (1972-11-01), Braun et al.
patent: 3778156 (1973-12-01), Schmedes et al.
massmann, Spectrochimica Acta, vol. 23B, No. 4, Apr. 1968 pp. 215-226.

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