Ingredient analysis method and ingredient analysis apparatus
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United States of America Patent
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Oct 9, 2007
Grant Date -
Jul 28, 2005
app pub date -
Jan 10, 2005
filing date -
Jan 15, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In an ingredient analysis method and an ingredient analysis apparatus in accordance with the present invention, high-frequency power is supplied from a power source 4 while helium gas is supplied to an atmospheric pressure plasma source 2 disposed near a substance to be analyzed, whereby plasma 5 is generated, and the substance to be analyzed is exposed to the plasma 5 and emits light. The light is guided to a filter 7 and a photodiode 8 via an optical fiber 6 and subjected to photoelectrical conversion. The signal obtained by the photoelectrical conversion is sent to a controller 9. The controller 9 judges whether a specific element is present or not in the substance to be analyzed.
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