Leaching and reduction of chromium in soil as affected by soil organic content and plants. Academic Article

abstract

• The oxidation state of chromium in contaminated soils is an important indicator of toxicity and potential mobility. Chromium in the hexavalent state is highly toxic and soluble, whereas the trivalent state is much less toxic and relatively insoluble. A laboratory study investigated the impact of growing plants and supplemental organic matter on chromium transport in soil. Plants alone had no appreciable effect on the chromium oxidation state in soil. Soil columns with higher organic content were associated with lower ratios of chromate:total chromium than the columns with lower organic matter. Analyses of column leachate, plant biomass, and soil indicate that more chromium leaching occurred in the vegetated, low organic columns. Retention of Cr in the soils was correlated to the Cr(III) content. Plant uptake of chromium accounted for less than 1% of the chromium removed from the soil. Overall, the addition of organic matter had the strongest influence on chromium mobility.

authors

• Banks, M. Katherine

published proceedings

• Chemosphere

altmetric score

• 3

author list (cited authors)

• Banks, M. K., Schwab, A. P., & Henderson, C.

citation count

• 188

complete list of authors

• Banks, MK||Schwab, AP||Henderson, Carlos

publication date

• January 2006

publisher

• Elsevier  Publisher

published in

• Chemosphere  Journal

keywords

• Biomass
• Chromium
• Environmental Pollution
• Kinetics
• Models, Biological
• Plant Development
• Plant Roots
• Plant Shoots
• Soil Pollutants
• Solubility

PubMed Central ID

• 16000212

Digital Object Identifier (DOI)

• 10.1016/j.chemosphere.2005.05.020

start page

• 255

end page

• 264

volume

• 62

issue

• 2

URL

• http://dx.doi.org/10.1016/j.chemosphere.2005.05.020