Skip common site navigation and headers
United States Environmental Protection Agency
Exposure Research
Begin Hierarchical Links EPA Home > Research & Development > Exposure Research > Publications/Presentations > End Hierarchical Links

 

Hydrologic Conditions Affecting the Tropospheric Flux of Vinclozolin and Its Degradation Products

spacer
spacer
Abstract: A laboratory chamber was used to determine hydrologic conditions that lead to the tropospheric flux of a suspected anti-androgenic dicarboximide fungicide, vinclozolin (3-(3,5-dichlorophenyl)-5-methyl-5-vinyl-oxzoli-dine-2,4-dione) and three degradation products from sterilized and unsterilized North Carolina Piedmont aquic hapludult soils following fungicide spray applications. Fluid-filled pore space, fluid pH, and fungicide incorporation into the soil were studied. Results indicate that the formation of the metabolite, 2-[(3,5-dichlorophenyl)-carbamoyl]oxy-2-methyl-3-butenoic acid ("M1-butenoic acid"), occurs from base-catalyzed hydrolysis, but the degradation is enhanced by the presence of microbes. M1-butenoic acid flux was also found to increase with lower pH levels in the soil pore fluid and when the fungicide was incorporated into the soil. Reduction and acid-catalytic reactions also appear to play a role in dicarboximide degradation in the soil at lower pore fluid pH levels.

This work has been funded in part by the EPA. It has been subjected to Agency review and approved for publication. Mention of trade names or commercial products does not constitute endorsement or recommendation for use.
spacer
Citation:Vallero, D. A., and J. J. Peirce. Hydrologic Conditions Affecting the Tropospheric Flux of Vinclozolin and Its Degradation Products. HYDROLOGICAL SCIENCE AND TECHNOLOGY 17(1-4):371-385, (2001).
spacer
spacer
Contact: Liz Hope - (919) 541-2785 or hope.elizabeth@epa.gov
spacer
Division: Human Exposure & Atmospheric Sciences Division
spacer
Branch: Human Exposure Analysis Branch
spacer
Product Type: Journal
spacer
Published: 12/01/2001
spacer
Related Entries:
spacer
Bullet Item Methods Development at the Near Lab Ecological Research Area (Nlera) Located in the Neuse River Basin.
spacer Relationship Reason:   A Project of the Product
spacer
spacer
spacer

 

ORD Home | Search EPA | Search NERL | Search EIMS | Contacts | Help

 
Begin Site Footer

EPA Home | Privacy and Security Notice | Contact Us

Last Updated on Monday, October 22, 2007
URL: http://cfpub.epa.gov