Journal of Photochemistry and Photobiology A: Chemistry 357 (2018) 81–84 Contents lists available at ScienceDirect Journal of Photochemistry and Photobiology A: Chemistry journal homepa ge: www.elsev ier.com/locate/jphotochem Short note The importance of a photon-based approach to quantum yield determinations a a, b Te Fang , Ron Hofmann , James Bolton Department of Civil Engineering, University of Toronto, 35 St. George St., Toronto, ON, M5S 1A4, Canada Bolton Photosciences Inc., 628 Cheriton Cres., NW Edmonton, AB, T6R 2M5, Canada A R T I C L E I N F O A B S T R A C T Article history: It was recently reported that when using polychromatic light sources, a photon-based approach should Received 10 November 2017 Received in revised form 23 January 2018 be used to determine photochemical parameters instead of an energy-based approach, and that failure to Accepted 18 February 2018 do so would lead to errors. To illustrate whether the errors could be signiﬁcant, the quantum yield of Available online 19 February 2018 atrazine photolysis was determined by measuring its decomposition rate using a medium pressure UV lamp. The results showed that the use of the previously-reported method to calculate quantum yield Keywords: introduced a 9%
Journal of Photochemistry and Photobiology A: Chemistry – Elsevier
Published: Apr 15, 2018
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