Arrangement for electrothermally atomizing specimens to be analy

Details Arrangement for electrothermally atomizing specimens to be analy Arrangement for electrothermally atomizing specimens to be analy

1993-12-23

1995-04-18

Evans, F. L.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356244, G01N 2174

Patent

active

054083168

ABSTRACT:
The invention is directed to an arrangement for electrothermal atomization and includes a furnace body having a furnace tube defining a specimen chamber and defining a longitudinal tube axis and having two lateral sides extending parallel to the axis. The furnace body has two contact pieces formed on the furnace tube at corresponding lateral sides thereof. The contact pieces define a contact axis extending perpendicularly to the tube axis. The contact pieces and the furnace tube conjointly define a single integral body made of the same material. Each of the contact pieces includes raised portions defining furnace body contact surfaces. Two ring-shaped electrodes supply current to the furnace body and each of the electrodes defines an electrode contact surface for contact engaging the contact surfaces of one of the contact pieces thereby establishing an electric contact interface to the one contact piece. The two electrodes and the furnace body are configured so as to cause the electric contact interfaces to be the electrical contacts to the furnace body. A separate hollow body is interposed between the two electrodes and has an interior for accommodating the furnace tube therein. The hollow body includes a first passage for facilitating placing a specimen in the specimen chamber and a second passage for conducting protective gas to the furnace body and a third passage facilitates radiating a measuring light beam through the specimen chamber.

REFERENCES:
patent: 4407582 (1983-10-01), Woodriff
"Neue Anwendungsmoglichkeiten der Graphitorhr-Atom-Absorptions-Spektroskopie durch den Einsatz von mikrocomputergesteuerten Programmern" by H. Schulze, GIT Fachz. Lab., Year 23, Jan. 1979.

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