Aqueous singlet oxygen reaction kinetics of furfuryl alcohol: effect of temperature, pH, and salt content
Latch, Douglas E.
Erickson, Paul R.
- Journal Article
Rechte / LizenzCreative Commons Attribution 3.0 Unported
The rate constant for the reaction between furfuryl alcohol (FFA) and singlet oxygen (1O2) in aqueous solution was measured as a function of temperature, pH and salt content employing both steady-state photolysis (β value determination) and time-resolved singlet oxygen phosphorescence methods. The latter provided more precise and reproducible data. The reaction rate constant, krxn,FFA, had a relatively small temperature dependence, no pH dependence and showed a small increase in the presence of high salt concentrations (+19% with 1 M NaCl). A critical review of the available literature suggested that the widely used value of 1.2 × 108 M−1 s−1 is likely overestimated. Therefore, we recommend the use of 1.00 × 108 M−1 s−1 for reactions performed in low ionic strength aqueous solutions (freshwater) at 22 °C. Furthermore, corrections are provided that should be applied when working at higher or lower temperatures, and/or at high salt concentrations (seawater). Mehr anzeigen
Zeitschrift / SerieEnvironmental Science: Processes & Impacts
Seiten / Artikelnummer
VerlagRoyal Society of Chemistry
Organisationseinheit03850 - McNeill, Kristopher / McNeill, Kristopher