Method and apparatus for environmental monitoring
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United States of America Patent
Stats
-
Dec 2, 2003
Grant Date -
Sep 12, 2002
app pub date -
Oct 20, 2001
filing date -
Aug 18, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An infrared beam is applied into an infrared transmitting substrate 10 disposed in an environment to be measured; the infrared beam which has undergone multiple internal reflections in the infrared transmitting substrate 10 and exited from the infrared transmitting substrate 10 is detected; the detected infrared beam is spectroscopically analyzed to measure a species and/or a quantity of the substance in the environment present near the infrared transmitting substrate 10; and a species and/or a concentration of the substance in the environment to be measured are measured based on the species and/or the quantity of the substance in the environment present near the infrared transmitting substrate 10. Thus, the substances in the environment, such as organic contaminants, etc., present in the atmosphere can be identified, or their concentrations can be measured, with high sensitivity and realtime.
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