Can rainwater induce Fenton-driven degradation of herbicides in natural waters?

Qin, Junhao and Li, Huashou and Lin, Chuxia and Chen, Gu (2013) Can rainwater induce Fenton-driven degradation of herbicides in natural waters? Chemosphere, 92 (8). pp. 1048-1052. ISSN 0045-6535

Abstract

Microcosm experiments were conducted to examine Fenton reaction-driven degradation of three common herbicides exposed to a variety of Fe2+–H2O2 combinations that are likely to be encountered in natural water environments. The results show that these combinations had significant (P < 0.05) effects on removing the water-borne herbicides. This discovery sheds some light on the possible role of rainwater-borne H2O2 in inducing Fenton reaction in many natural waters such as lakes, streams, estuaries and tidal
zones, fishponds and paddy fields that may contain ferrous ion at micromolar levels. The research findings obtained from this preliminary work provide a rationale for undertaking further study to confirm the presence of an overlooked naturally-occurring process that may lead to rapid dissipation of many herbicides and other organic pollutants in open water environments. Our immediate follow-up work is to continue the laboratory-scale investigations under more complex experimental conditions, including the uses of various natural water samples for the experiments. This will provide a basis for future field-based study.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2013 Elsevier Ltd. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Business, Education, Law and Arts - School of Commerce
Date Deposited: 12 Jul 2013 02:24
Last Modified: 15 Oct 2014 02:22
Uncontrolled Keywords: Fenton reaction; herbicide; natural waters; hydrogen peroxide; ferrous ion; degradation
Fields of Research : 04 Earth Sciences > 0406 Physical Geography and Environmental Geoscience > 040608 Surfacewater Hydrology
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079901 Agricultural Hydrology (Drainage, Flooding, Irrigation, Quality, etc.)
05 Environmental Sciences > 0502 Environmental Science and Management > 050299 Environmental Science and Management not elsewhere classified
Socio-Economic Objective: D Environment > 96 Environment > 9699 Other Environment > 969999 Environment not elsewhere classified
Identification Number or DOI: 10.1016/j.chemosphere.2013.03.003
URI: http://eprints.usq.edu.au/id/eprint/23393

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