Electrothermal atomization furnace

Details Electrothermal atomization furnace Electrothermal atomization furnace

1988-12-16

1990-09-04

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356244, G01N 2174

Patent

active

049539779

ABSTRACT:
A furnace for electrothermal atomization of samples for atomic absorption spectroscopy comprises a tubular furnace body with lateral inlet aperture and sample-holding inner body which has a hollow, generally semicylindrical shape. The inner body is located within the furnace body opposite the inlet aperture and is connected to the furnace body by a single web. In one embodiment the web is provided with axial bores and the inner surface of the sample holder has a plurality of projections forming a portion of a screw thread. In another embodiment, two hollow, generally semicylindrical bodies extend around the furnace body and thereby define a cavity and a slot. The furnace body and two hollow, generally semicylindrical bodies are interconnected by lateral webs. Electrical contacts members are provided on the semicylindrical bodies. The entire furnace is one integral graphite element.

REFERENCES:
patent: 3778156 (1973-12-01), Schmedes et al.
patent: 3817629 (1974-06-01), Witte
patent: 3819279 (1974-06-01), Braun
patent: 4098554 (1978-07-01), Huber et al.
patent: 4111563 (1978-09-01), Tamm
patent: 4303339 (1981-12-01), Glaser et al.
patent: 4407582 (1983-10-01), woodriff
Falk et al, Fresenius Z. Anal Chem. 323, 1986, pp. 748-753.
Patents Abstracts of Japan, Sect. p, vol. 8, Sep. 29, 1984, No. 214, (P-304).

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