Temperature Dependence of Dissolved Organic Matter Fluorescence

Environmental Science & Technology
Garrett McKayFernando L Rosario-Ortiz

Abstract

The temperature dependence of organic matter fluorescence apparent quantum yields (Φf) was measured for a diverse set of organic matter isolates (i.e., marine aquatic, microbial aquatic, terrestrial aquatic, and soil) in aqueous solution and for whole water samples to determine apparent activation energies ( Ea) for radiationless decay processes of the excited singlet state. Ea was calculated from temperature dependent Φf data obtained by steady-state methods using a simplified photophysical model and the Arrhenius equation. All aquatic-derived isolates, all whole water samples, and one soil-derived fulvic acid isolate exhibited temperature dependent Φf values, with Ea ranging from 5.4 to 8.4 kJ mol-1 at an excitation wavelength of 350 nm. Conversely, soil humic acid isolates exhibited little or no temperature dependence in Φf. Ea varied with excitation wavelength in most cases, typically exhibiting a decrease between 350 and 500 nm. The narrow range of Ea values observed for these samples when compared to literature Ea values for model fluorophores (∼5-30 kJ mol-1) points to a similar photophysical mechanism for singlet excited states nonradiative inactivation across organic matter isolates of diverse source and character. In ...Continue Reading

References

Mar 1, 1969·The Journal of Chemical Physics·J Eisinger, G Navon
Jul 17, 1998·Biochemistry·Y Chen, M D Barkley
Jul 16, 1962·Biochimica Et Biophysica Acta·J A GALLY, G M EDELMAN
Aug 10, 2004·Environmental Science & Technology·Rossana Del Vecchio, Neil V Blough
Sep 2, 2004·Photochemistry and Photobiology·Jared V GoldstoneBettina M Voelker
Dec 31, 2005·Environmental Science & Technology·Rebecca Sutton, Garrison Sposito
Feb 7, 2006·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Sule Oncul, Alexander P Demchenko
Feb 25, 2006·Science·Douglas E Latch, Kristopher McNeill
Apr 4, 2006·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Julian M Menter
Mar 7, 2009·The Journal of Physical Chemistry. a·Shigeo KanekoSeiji Tobita
May 21, 2009·Environmental Science & Technology·Erin S BoyleNeil V Blough
Dec 3, 2009·Environmental Science & Technology·Michael AeschbacherRené P Schwarzenbach
Jun 19, 2010·Environmental Science & Technology·Jiahai MaNeil V Blough
Jul 3, 2010·Environmental Science & Technology·Renée M DalrympleCharles M Sharpless
Jul 9, 2010·Environmental Science & Technology·Mei Mei DongFernando L Rosario-Ortiz
Nov 13, 2010·Environmental Science & Technology·Kathleen R MurphyGeorge R Aiken
Jun 15, 2011·Environmental Science & Technology·Garrett McKayFernando L Rosario-Ortiz
Apr 3, 2012·Environmental Science & Technology·Michael AeschbacherMichael Sander
Jul 23, 2013·Nature Protocols·Christian WürthUte Resch-Genger
Jan 5, 2014·Water Research·Julie A KorakFernando L Rosario-Ortiz
Feb 27, 2015·Environmental Science & Technology·Garrett McKay, Fernando L Rosario-Ortiz
Dec 30, 2016·Environmental Science & Technology·Fernando L Rosario-Ortiz, Julie A Korak
Oct 17, 2017·Environmental Science & Technology·Markus SchmittKristopher McNeill
Dec 7, 2017·Environmental Science & Technology·Garrett McKayFernando L Rosario-Ortiz

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Citations

Nov 5, 2019·The Science of the Total Environment·Elfrida M CarsteaJohn Bridgeman
Jul 15, 2021·Environmental Science & Technology·Boris P YakimovEvgeny A Shirshin
Aug 30, 2018·Environmental Science & Technology·K R MurphyC A Stedmon

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