Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Patent
1984-05-01
1987-04-28
Evans, F. L.
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
356244, G01N 2174
Patent
active
046609768
ABSTRACT:
The invention relates to a method and device for electrothermal atomization of a sample material, particularly for use in atomic absorption or atomic fluorescence spectroscopy in which an atomizing apparatus including a graphite tube sealed towards ambience is connected to a pressure gas source. The gas inlets provided in said atomizing apparatus serve to produce a symmetrical configuration of an atomized sample material cloud, the atomization of the sample material is acheived by a respective temperature increase which is combined with a pressure gas increase at least during a period of temperature increase. The relation between the starting pressure of the gas and the final pressure of the gas is substantially equal to the relation between the starting temperature and the final temperature. The device used for carrying out the method of the invention includes a control system for control of the temperature and the pressure in said atomization apparatus.
REFERENCES:
patent: 4098554 (1978-07-01), Huber et al.
Rapperport et al., Rev. Sci. Instr., vol. 41, No. 8, Aug. 1970, pp. 1168-1171.
Perkin--Elmer HGA--500 brochure, Feb. 14, 1979.
Evans F. L.
Harringa Joel L.
Jenoptik Jena GmbH
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