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National Agricultural Library
U.S. Department of Agriculture
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  4. Chemistry, Bioavailability, and Toxicity of Constituents in Residuals and Residual-Treated Soils

Chemistry, Bioavailability, and Toxicity of Constituents in Residuals and Residual-Treated Soils

Objective

Predict the long-term bioavailability and toxicity of nutrients, trace elements, and organic constituents in residual-amended agricultural and contaminated soils.

More information

NON-TECHNICAL SUMMARY: With the rapid development and wide application of nanotechnology, introduction of manufactured nanomaterials to the environment is inevitable. As a matter of fact, it has been reported in 2008 that nano-TiO2 is leached out of house facades into receiving waters. This research will determine the environmental behavior of several types of manufactured nanomaterials. The results of this study are expected to help us understand how these tiny particles interact with natural and synthetic molecules, and their fate, mobility, exposure and bioavailability in the environment.

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APPROACH: Commercially available nanoparticles will be purchased and characterized by both spectroscopic and microscopic techniques. Their colloidal and sorptive behaviors will be examined using dynamic light scattering, atomic force microscopy, liquid scintillation counting, transmission electron microscope, and liquid chromatography.

Investigators
Xing, Baoshan
Institution
University of Massachusetts - Amherst
Start date
2008
End date
2009
Funding Source
Nat'l. Inst. of Food and Agriculture
Project number
MAS00973
Accession number
217649
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