An explanation of the spectral variation in freshwater CDOM fluorescence

Show full item record

Title: An explanation of the spectral variation in freshwater CDOM fluorescence
Author: Vodacek, Anthony
Abstract: The variation of freshwater chromophoric (or colored) dissolved organic matter (CDOM) fluorescence with respect to sample pH was examined. Trends from previous studies are supported by results obtained from fluorescence spectra collected during sample titration. The evidence suggests spectral variation of CDOM fluorescence can arise from pH-dependent photo-oxidation of a portion of the catechol component of CDOM to coumarin structures. A hypothesis is drawn that the observed shorter wavelength fluorescence exhibited by acid lake samples relative to the spectra of more neutral lake samples is, in part, a result of the inhibition of CDOM photo-oxidation under the acid condition. By careful choice of both excitation and emission wavelengths, fluorescence measurements may monitor changes in the composition of CDOM.
Description: This article may be accessed from the publisher's website (additional fees may apply) at: http://www.aslo.org/lo/toc/vol_37/issue_8/1808.pdfRIT community members may access full-text via RIT Libraries licensed databases: http://library.rit.edu/databases/
Record URI: http://hdl.handle.net/1850/4253
Date: 1992

Files in this item

Files Size Format View
ASLOArchivePolicy.pdf 85.40Kb PDF View/Open

The following license files are associated with this item:

This item appears in the following Collection(s)

Show full item record

Search RIT DML


Advanced Search

Browse