Phytoavailability of uranium: Influence of plant species and soil characteristics

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Abstract

Five plants (Maize, Indian mustard, Wheat, Pea and Ryegrass) with reported differences in uranium uptake were screened in a greenhouse experiment for their uranium soil-to-plant transfer from two soils. Soils were spiked with 238U and were distinct in uranium availability characteristics. It was investigated if vari-ability in uptake could be traced back to a different interaction of plants with the soil matrix or to different organic acid concentrations in the soils after plant growth. Clearly distinct transfer factors were obtained between soil groups which could be traced back to a difference in uranium availability between soils. How-ever, within a soil group, there was no relation between (plant-induced changes in) soil characteristics and the transfer factors observed. The mechanisms by which the plants inhibit or promote root-shoot transfer seemed more important than soil characteristics to explain the difference in uranium transfer factor observed.

Details

Original languageEnglish
Title of host publicationUranium in the Environment: Mining Impact and Consequences
Place of PublicationBerlin-Heidelberg
Pages469-476
Publication statusPublished - 11 Sep 2005
EventUranium in the Environment: Mining Impact and Consequences - Freiberg, Germany
Duration: 11 Sep 200514 Sep 2005

Conference

ConferenceUranium in the Environment: Mining Impact and Consequences
CountryGermany
CityFreiberg
Period2005-09-112005-09-14

Keywords

  • plants, organic acids, uranium, transfer factor

ID: 306451