Graphite tube atomizer for flameless atomic absorption spectrosc

Details Graphite tube atomizer for flameless atomic absorption spectrosc Graphite tube atomizer for flameless atomic absorption spectrosc

1977-04-13

1979-11-27

Corbin, John K.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

339 35, G01J 330, H01R 1354, H01R 1362

Patent

active

041758633

ABSTRACT:
A graphite tube atomizer for flameless atomic absorption spectroscopy includes a graphite tube disposed to permit passage of a measuring beam therethrough. The graphite tube is engaged at opposite ends by annular contact pieces which are coupled to a source of electrical current. The contact pieces are supported in housing portions which serve to surround the graphite tube and provide a chamber into which cooling gasses can be admitted. The cooling gasses also serve to reduce deterioration of the graphite tube. The housing portions are selectively movable either toward or away from each under the power of a drive mechanism. The housings may be urged by the drive mechanism toward each other so the contacts mounted thereon are in selectable pressure engaging contact opposite ends of the graphite tube.

REFERENCES:
patent: 2052976 (1936-09-01), Harcourt
patent: 3277420 (1966-10-01), Council
patent: 4022530 (1977-05-01), Braun et al.
Hedges, C.S., "Practical Fluid Power Control-Electrical & Fluidic" Womack Educational Pubs., Dallas, Texas, 1971, pp. 9-12.
Stewart et al. "ABC's of Hydraulic Circuits," Howard W. Sams & Co. Inc., The Bobbs-Merrill Co., Inc., 1973.

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