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Sims, Gerald K. Johnson, Teresa Ann 2015-09-25T21:00:44Z 2015-09-25T21:00:44Z 10000-01-01 1999 1999 The influence of discontinuous water films on bioavailability of xenobiotics to soil microorganisms was examined in the third study. Comparisons were made between two scenarios for distributing the xenobiotic relative to an inoculated degrader under a range of soil moisture conditions. Spatial proximity of xenobiotic had a substantial effect on the extent of degradation, with an additional effect of moisture content. Simultaneous addition of the compound and the degrader to the soil resulted in reduced mineralization dependence on mass transfer and microbial motility. Solution phase concentrations of the compound in the vicinity of the degraders were controlled by application method, however, overall fraction of solution phase substrate was not affected, suggesting that mineralization was limited by a localized lack of solution phase substrate. The results demonstrate a possible role of physical accessibility in environmental fate of xenobiotics. Made available in DSpace on 2015-09-25T21:00:44Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 9953055.pdf: 3051677 bytes, checksum: 2ff68f0ee7a71ddad719f0e55905f79c (MD5) Previous issue date: 1999 Embargo set by: Seth Robbins for item 84425 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 106 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1999. http://hdl.handle.net/2142/83144 (MiAaPQ)AAI9953055 eng Environmental Sciences Microbial Ecology: Spatial Aspects of Pesticide Degradation text Natural Resrouces and Environmental Sciences Natural Resrouces and Environmental Sciences University of Illinois at Urbana-Champaign Dissertation Ph.D.