Electrothermal atomization of a sample for spectroscopic purpose

Details Electrothermal atomization of a sample for spectroscopic purpose Electrothermal atomization of a sample for spectroscopic purpose

1989-07-11

1991-04-09

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356244, G01J 330, G01N 2174

Patent

active

050059769

ABSTRACT:
A device for electrothermal atomization of a sample for spectroscopic purposes comprises a furnace (10) which is held between two contacts (54, 56). The contacts (54, 56) surround the furnace (10 ) and form a cavity (58) with an insulating gap (88) being formed between the contacts (54, 56). This gap (88) is closed by a seal (142) made of ceramic felt so that inert gas passed into the cavity (58) emerges only through a bore (14) of the furnace (10) and sample inlet ports (116, 120). Thereby, the inert gas consumption is reduced well-defined flow conditions also result for the inert gas in the cavity (58) which expands when the furnace (10) is heated.

REFERENCES:
patent: 4022530 (1977-05-01), Braun et al.
patent: 4098554 (1978-07-01), Huber et al.
patent: 4660976 (1987-04-01), Falk
patent: 4681536 (1987-07-01), Jansen
patent: 4834536 (1989-05-01), Tamm et al.

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