Record Display for the EPA National Library Catalog

RECORD NUMBER: 25 OF 76

OLS Field Name OLS Field Data
Main Title High Sensitivity Laser Absorption Spectroscopy of Laboratory Aqueous Solutions and of Natural Missouri Waters. A Feasibility Study.
Author Querr, Marvin R. ; Hollan, Wayne E. ; Warin, Richard C. ; Hal, George M. ;
CORP Author Missouri Water Resources Research Center, Columbia.
Year Published 1973
Report Number DI-14-01-0001-3825; OWRR-A-058-MO; 01658,; A-058-MO(2)
Stock Number PB-225 431
Additional Subjects Spectroscopic analysis ; Chlorophylls ; Iron ; Water analysis ; Sulfates ; Absorption ; Spectrophotometers ; Dyes ; Quantitative analysis ; Water pollution ; Missouri ; Visible spectrum ; Laser spectroscopy ; Water pollution detection
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-225 431 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 83p
Abstract
Investigations have definitely shown that the quantity of both chlorophyll types a and b can be nondestructively measured in solution by use of laser enhanced absorption spectroscopy (LEAS) at 1/100 the concentration easily detectable by use of ordinary spectrophotometric methods; this is a 100 times increase in sensitivity. It is estimated that the ultimate sensitivity for the LEAS technique is 10,000 times greater than that for ordinary spectrophotometric methods. (Modified author abstracts)