Infrared trace element detection system
Abstract
An infrared trace element detection system includes an optical cell into which the sample fluid to be examined is introduced and removed. Also introduced into the optical cell is a sample beam of infrared radiation in a first wavelength band which is significantly absorbed by the trace element and a second wavelength band which is not significantly absorbed by the trace element for passage through the optical cell through the sample fluid. The output intensities of the sample beam of radiation are selectively detected in the first and second wavelength bands. The intensities of a reference beam of the radiation are similarly detected in the first and second wavelength bands. The sensed output intensity of the sample beam in one of the first and second wavelength bands is normalized with respect to the other and similarly, the intensity of the reference beam of radiation in one of the first and second wavelength bands is normalized with respect to the other. The normalized sample beam intensity and normalized reference beam intensity are then compared to provide a signal from which the amount of trace element in the sample fluid can be determined. 11 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Spectral Sciences Inc
- OSTI Identifier:
- 7019993
- Patent Number(s):
- 4785184
- Application Number:
- PPN: US 6-866891
- Assignee:
- Spectral Sciences, Inc., Burlington, MA (United States)
- DOE Contract Number:
- AC02-83ER80085
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 27 May 1986
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FLUIDS; ABSORPTION SPECTROSCOPY; INFRARED SPECTROMETERS; SAMPLE HOLDERS; DESIGN; INFRARED RADIATION; OPERATION; TRACE AMOUNTS; ELECTROMAGNETIC RADIATION; MEASURING INSTRUMENTS; RADIATIONS; SPECTROMETERS; SPECTROSCOPY; 400102* - Chemical & Spectral Procedures
Citation Formats
Bien, F, Bernstein, L S, and Matthew, M W. Infrared trace element detection system. United States: N. p., 1988.
Web.
Bien, F, Bernstein, L S, & Matthew, M W. Infrared trace element detection system. United States.
Bien, F, Bernstein, L S, and Matthew, M W. Tue .
"Infrared trace element detection system". United States.
@article{osti_7019993,
title = {Infrared trace element detection system},
author = {Bien, F and Bernstein, L S and Matthew, M W},
abstractNote = {An infrared trace element detection system includes an optical cell into which the sample fluid to be examined is introduced and removed. Also introduced into the optical cell is a sample beam of infrared radiation in a first wavelength band which is significantly absorbed by the trace element and a second wavelength band which is not significantly absorbed by the trace element for passage through the optical cell through the sample fluid. The output intensities of the sample beam of radiation are selectively detected in the first and second wavelength bands. The intensities of a reference beam of the radiation are similarly detected in the first and second wavelength bands. The sensed output intensity of the sample beam in one of the first and second wavelength bands is normalized with respect to the other and similarly, the intensity of the reference beam of radiation in one of the first and second wavelength bands is normalized with respect to the other. The normalized sample beam intensity and normalized reference beam intensity are then compared to provide a signal from which the amount of trace element in the sample fluid can be determined. 11 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 1988},
month = {Tue Nov 15 00:00:00 EST 1988}
}