Platform for a transversely-heated electrothermal atomizer furnace for atom absorption spectroscopy

US5367374A · kind A · utility

Assignee

• Carl Zeiss Jena GmbH · DE

Inventors

• Klaus Eichardt · Jena, DE
• Bruno Hutsch · Bonn, DE

Key dates

• Filing date: Dec 23, 1993
• Grant date: Nov 22, 1994
• Expiry date: Dec 23, 2013

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/74
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention is directed to a platform for a transversely-heated electrothermal atomizer furnace which includes a furnace tube having a predetermined tube length and an inner wall surface defining an inner tube diameter. The platform includes first and second current-conducting holding rings provided in the furnace tube at first and second ends thereof, respectively, thereby narrowing the cross section of said furnace tube. The holding rings each have an outer diameter corresponding approximately to the inner tube diameter of the furnace tube and the rings taken together have a total thickness less than 40% of the tube length. A specimen carrier is fixedly connected to at least one of the holding rings and the specimen carrier and the one holding ring conjointly define an integral structural unit made of the same material. The specimen carrier is configured so as to be in spaced relationship to the inner wall surface of the furnace tube so that the specimen carrier has no electrical or direct thermal contact thereto.