Infrared absorption spectroscopy of liquids employing a thermal

Details Infrared absorption spectroscopy of liquids employing a thermal Infrared absorption spectroscopy of liquids employing a thermal

1975-02-20

1977-09-13

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250346, G01J 100

Patent

active

040484998

ABSTRACT:
In an infrared laser absorption spectrometer, an infrared laser beam of predetermined wavelength, in the infrared absorption spectrum, is beamed into a liquid sample under analysis. Components of the liquid sample absorb energy from the infrared beam, as a function of the infrared wavelength of the beam, to produce heating of the liquid. A thermal detector is disposed in heat exchanging relation with the liquid sample for detecting the heating effect in the liquid due to absorption of the infrared radiation. This detection scheme is particularly useful for monitoring the effluent of a liquid chromatograph as it provides specific detection.

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patent: 3820901 (1974-06-01), Krenzer
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