Aqueous photochemical degradation of hydroxylated PAHs: Kinetics, pathways, and multivariate effects of main water constituents

The Science of the Total Environment
Linke GeZiwei Yao

Abstract

Hydroxylated polycyclic aromatic hydrocarbons (OH-PAHs) are contaminants of emerging concern in the aquatic environment, so it is of great significance to understand their environmental transformation and toxicity. This study investigated the aqueous photochemical behavior of four OH-PAHs, 9-Hydroxyfluorene (9-OHFL), 2-Hydroxyfluorene, 9-Hydroxyphenanthrene and 1-Hydroxypyrene, under simulated sunlight irradiation (λ>290 nm). It was observed that their photodegradation followed the pseudo-first-order kinetics. Based on the determined quantum yields, their calculated solar apparent photodegradation half-lives in surface waters at 45° N latitude ranged from 0.4min for 9-Hydroxyphenanthrene to 7.5 × 10(3)min for 9-OHFL, indicating that the OH-PAHs would intrinsically photodegrade fast in sunlit surface waters. Furthermore, 9-OHFL as an example was found to undergo direct photolysis, and self-sensitized photooxidation via OH rather than (1)O2 in pure water. The potential photoreactions involved photoinduced hydroxylation, dehydrogenation and isomerization based on product identification by GC-MS/MS. 9-OHFL photodegraded slower in natural waters than in pure water, which was attributed to the integrative effects of the most photorea...Continue Reading

References

Oct 22, 2002·Environmental Science & Technology·Matthew P Fasnacht, Neil V Blough
Jun 25, 2003·Chemosphere·Ester SepicHermina Leskovsek
Jan 14, 2004·Environmental Science & Technology·Matthew P Fasnacht, Neil V Blough
Mar 23, 2005·Environmental Toxicology and Chemistry·Douglas E LatchKristopher McNeill
Jun 30, 2005·Environmental Science & Technology·Matthias GroteRolf Altenburger
Aug 26, 2006·Science·René P SchwarzenbachBernhard Wehrli
Sep 27, 2006·Environmental Science & Technology·Betsy L EdhlundKristopher McNeill
Oct 21, 2006·Environmental Science & Technology·Serge ChironDavide Vione
Jan 30, 2007·Environmental Science & Technology·Jindriska DolinováPetr Klán
Jan 30, 2007·The Journal of Physical Chemistry. a·T F Kahan, D J Donaldson
Mar 21, 2008·Environmental Science & Technology·Dorthe G PetersenIngela Dahllöf
Oct 3, 2008·Journal of Hazardous Materials·Mariana NeamţuFritz H Frimmel
Dec 24, 2009·Environmental Science & Technology·Jennifer J GuerardChristopher M Hadad
Jul 26, 2011·Journal of Hazardous Materials·S SanchesV J Pereira
Nov 1, 1982·Environmental Science & Technology·D Dulin, T Mill
Jun 4, 2014·Chemistry : a European Journal·Davide VioneClaudio Minero
Jun 24, 2014·The Science of the Total Environment·P CalzaC Minero

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Citations

May 26, 2017·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Ying-Hua LiSi-Qi Wang
Apr 3, 2018·Analytical and Bioanalytical Chemistry·Holly M DixonKim A Anderson
Nov 15, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Lei ChenYuchen He
Aug 3, 2020·Bulletin of Environmental Contamination and Toxicology·Crislaine BertoldiMariliz Gutterres
Oct 13, 2018·The Science of the Total Environment·Vanda ArtifonGilberto Fillmann
Aug 18, 2021·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Rayany Magali da Rocha SantanaMarta Maria Menezes Bezerra Duarte

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