Device for electrothermal atomizing of samples for spectroscopic

Details Device for electrothermal atomizing of samples for spectroscopic Device for electrothermal atomizing of samples for spectroscopic

1990-02-16

1991-11-19

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356244, G01N 2174

Patent

active

050661230

ABSTRACT:
A device for electrothermal atomization of samples for spectroscopic purposes with a furnace body made of graphite, designed such that electrical current can be passed through, and a pot-shaped sample receptacle which is separated from the furnace body and projects into a lateral aperture of the furnace body comprises a driving device by which the sample receptacle is movable into and out of thermal contact with the furnace body. The driving device together with the heating current of the furnace body is controlled by a controlling device such that the sample receptacle engages the furnace body during a drying and decomposing step and thereafter, is raised from the furnace body by the driving device. Thereafter, with raised sample receptacle, the furnace body is heated to atomization temperature until a temperature stabilization is achieved and, finally, the sample receptacle is again moved into contact with the furnace body.

REFERENCES:
patent: 3895873 (1975-07-01), Dennison et al.
patent: 4443105 (1984-04-01), Huber et al.
patent: 4639136 (1987-01-01), Morton
patent: 4721387 (1988-01-01), Brown
patent: 4824241 (1989-04-01), Littlejohn et al.

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