Method and apparatus for analytical sample preparation
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United States of America Patent
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Nov 29, 1994
Grant Date -
N/A
app pub date -
Apr 2, 1993
filing date -
Aug 9, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In the elemental analysis of an analyte present in a sample by optical or mass spectrometry, a nebulizer sprays the liquid sample into a chamber which has a wall transparent to infra-red radiation. Infra-red radiation from a heater external to the chamber is focused on to the droplets of sample as they emerge from the nebulizer, disrupting the droplets into smaller ones and evaporating solvent from them as they pass through the chamber. The thus desolvated sample stream is delivered into a plasma and the reaction accuracy within the plasma is qualified by the spectrometer.
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