Advanced Monitoring of Groundwater Cleanup Technologies - Phase I

To develop a multi-pass gas cell with maximum pathlength and minimum volume employing On-Line's patented non-spherical, aberration-correcting optics. Ray tracing analysis for the proposed small volume, long optical pathlength gas cell was completed. The analysis has resulted in a design which m...

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Bibliographic Details
Main Authors: Markham, James R, Nelson, Chad M
Format: Report
Language:English
Subjects:
CLEANING
FOURIER SPECTROMETERS
GAS CELLS
GROUND WATER
Industrial Chemistry and Chemical Processing
INFRARED OPTICAL SYSTEMS
INFRARED SPECTROMETERS
Inorganic Chemistry
MEASUREMENT
MINIATURIZATION
MONITORING
MULTIPASS GAS CELL
OPTICAL IMAGES
Optics
Organic Chemistry
PATHLENGTH
Physical Chemistry
PROTOTYPES
RAY TRACING
SENSITIVITY
TCE(TRICHLOROETHYLENE)
TRANSFER
TRICHLOROETHYLENE
VOLUME
Water Pollution and Control
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Summary:To develop a multi-pass gas cell with maximum pathlength and minimum volume employing On-Line's patented non-spherical, aberration-correcting optics. Ray tracing analysis for the proposed small volume, long optical pathlength gas cell was completed. The analysis has resulted in a design which meets the 500 cc gas volume constraint for the cell, while preserving the optical image quality over a suitably long pathlength. The analysis has indicated that a 50 meter effective pathlength is possible within the small volume constraint. To design, purchase and implement the infrared transfer optics to couple the miniature gas cell to a contractor owned FT-IR spectrometer suitable for on-site use. The Phase I monitor will be demonstrated for measurement sensitivity and speed during TCE monitoring. To evaluate the degree to which the overall Phase I objective was met and to formulate a preliminary design for a Phase II prototype. p1,6,8