| Title: | "Binding, distribution, and plant uptake of mercury in a soil from Oak Ridge, Tennessee, USA" |
| Author(s): | Han FX; Su Y; Monts DL; Waggoner CA; Plodinec MJ; |
| Address: | "Diagnostic Instrumentation and Analysis Laboratory (DIAL), Mississippi State University, 205 Research Blvd., Starkville, MS 39759, USA. han@dial.msstate.edu" |
| DOI: | 10.1016/j.scitotenv.2006.02.026 |
| ISSN/ISBN: | 0048-9697 (Print) 0048-9697 (Linking) |
| Abstract: | "A large amount of mercury has been discharged on the U.S. Department of Energy's Oak Ridge Site (Tennessee) as a part of the U.S. nuclear weapon program during the 1950s through the early 1960s. Increases in mercury concentration in fish and in lower East Fork Poplar Creek of Oak Ridge have been recently reported. This is an experimental study mimicking the initial stage of transformation and redistribution of mercury in soils, which are comparable to those of the Oak Ridge site. The objectives of this study were to investigate potential transformation, distribution, and plant uptake of mercury compounds in soils. Results show that the H(2)O(2)-oxidizable mercury fraction (organically bound mercury) was the major solid-phase fraction in soils freshly contaminated with soluble mercury compounds, while cinnabar fraction was the major solid phase fraction in soils contaminated with HgS. Langmuir relationships were found between mercury concentrations in plant shoots and in soil solid-phase components. Mercury in HgS-contaminated soils was to some extent phytoavailable to plants. Mercury transformation occurred from more labile fractions into more stable fractions, resulting in strong binding of mercury and decreasing its phytoavailability in soils. In addition, high mercury losses from soils contaminated with soluble mercury compounds were observed during a growing season through volatilization, accounting for 20-62% of the total initial mercury in soils" |
| Keywords: | Hydrogen Peroxide/chemistry Mercury/analysis/chemistry/*metabolism Mercury Compounds/analysis/chemistry/*metabolism Plant Roots/chemistry Plant Shoots/chemistry Pteris/*metabolism Soil Pollutants/analysis/*metabolism Tennessee Volatilization; |
| Notes: | "MedlineHan, Fengxiang X Su, Yi Monts, David L Waggoner, Charles A Plodinec, M John eng Research Support, U.S. Gov't, Non-P.H.S. Netherlands 2006/03/30 Sci Total Environ. 2006 Sep 15; 368(2-3):753-68. doi: 10.1016/j.scitotenv.2006.02.026. Epub 2006 Mar 29" |
