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Column‐Profile Measurements Using Fiber‐Optic Spectroscopy
Author(s) -
Kulp Thomas J.,
Bishop Dorothy,
Angel Stanley M.
Publication year - 1988
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1988.03615995005200030004x
Subject(s) - spectrometer , optical fiber , fluorescence spectroscopy , materials science , spectroscopy , optics , column (typography) , fiber , fluorescence , flow (mathematics) , analytical chemistry (journal) , chemistry , chromatography , telecommunications , physics , composite material , computer science , frame (networking) , quantum mechanics , mechanics
Fiber‐optic spectroscopy was used to measure the flow of a fluorescent dye in a column packed with glass beads. Optical fibers inserted between the packed beads served as light pipes to transmit excitation light to the measurement zone at their distal end and to return fluorescent emission to a spectrometer. In this way, the dye concentration at the point of measurement was monitored. Data are presented demonstrating that flow can be monitored at several points in the column by multiplexing more than one fiber into a single spectrometer. This technique provides a tool to make fundamental flow measurements that have to date been experimentally impossible.