Graphite tube furnace with specimen support for atomic absorptio

Details Graphite tube furnace with specimen support for atomic absorptio Graphite tube furnace with specimen support for atomic absorptio

1989-03-03

1990-11-20

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

G01N 2174

Patent

active

049714384

ABSTRACT:
A graphite tube furnace and a specimen support are provided for atomic absorption spectroscopy. The graphite tube furnace has end surfaces with slots. The specimen support has an intermediate or middle section with a recess for receiving a specimen and end sections which are wider than the middle section. Upon insertion in the graphite tube furnace, the specimen support is fixed with the wider end sections in the slots in the end faces and the intermediate section is held at a constant distance from the wall of the tube furnace. As a result, current conduction and heat flow between tube furnace and the specimen support are very small.

REFERENCES:
patent: 4826318 (1989-05-01), Guenther et al.
Falk et al., "Spatially and Temporally Resolved Temperature Profiles in Graphite Furnaces", Fresenius Z Anal. Chem. (1986) 323: pp. 748-753.

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