University of Illinois Urbana-Champaign

Photochemical fate of quinone outside inhibitor fungicides

Winkels, Ronan

Content Files
Winkels_Ronan_ECEC21.pdf

Permalink

https://hdl.handle.net/2142/109913

Description

Title
Photochemical fate of quinone outside inhibitor fungicides
Author(s)
Winkels, Ronan
Issue Date
2021-04-27
Keyword(s)
  • fungicide
  • agriculture
Date of Ingest
2021-04-26T16:57:31Z
Abstract
Presented by: Ronan Winkels – student at University of St. Thomas, wink8063@stthomas.edu Co-authors: David M. Cwiertny, Kristine H. Wammer Abstract: Quinone Outside Inhibitor (QOI) fungicides are heavily used throughout the US in quantities of up to 16,000 kg per county. However, little is known about their environmental fate or potential for transformation via various environmentally-relevant processes. QOI are suspected to have neurodegenerative effects, making their potential appearance in agriculturally impacted drinking water supplies a serious threat. The goal of this study was to investigate the potential for direct and indirect phototransformation of four QOIs: dimoxystrobin, fluoxastrobin, kresoxim-methyl, and fluoxastrobin. Photolysis experiments were performed using a solar simulator in both aqueous solutions and bound to surfaces. In aqueous solutions these compounds were shown to undergo photolysis directly; photolysis rates were enhanced in the presence of nitrate and nitrite indicating indirect photolysis may also be important. Direct photolysis was also observed when on a solid surface. Additionally, the photoproducts in each of these conditions are more hydrophilic, potentially allowing them to more easily travel into a drinking water supply than the parent QOI. Biography: Senior undergraduate chemistry major at the University of St. Thomas
Series/Report Name or Number
2021 Emerging Contaminants in the Environment Conference (ECEC21)
Type of Resource
  • text
  • still image
Genre of Resource
  • presentation/lecture/speech
  • conference paper
Language
en
Permalink
  • http://hdl.handle.net/2142/109913
  • https://youtu.be/ugCCPBkXLdM

Owning Collections

2021 Emerging Contaminants in the Environment Conference (ECEC21) PRIMARY