Evaluation of three herbaceous index plant species for bioavailability of soil cadmium, chromium, nickel and vanadium |
| |
Authors: | H W Martin T R Young D I Kaplan L Simon D C Adriano |
| |
Institution: | (1) Savannah River Ecology Laboratory, University of Georgia, 29802 Aiken, SC, USA;(2) Washington State University, 99163 Pullman, WA, USA;(3) College of Agriculture, Faculty of the Gödöll University, of Agriculture, P.O.Box 33, H-4401 Nyíregyháza, Hungary;(4) Present address: 229-A Presidential Dr., 19807 Greenville, DE, USA |
| |
Abstract: | Uncultivated plants growing on disturbed sites may be useful for assessing the bioavailability of some metals in soils, and thus the potential for metal mobilization up the terrestrial food chain, an important element in ecological risk assessment. A planted chicory cultivar (Cichorium intybus L. var. foliosum Hegi.) and the uncultivated plants horseweed (Canada fleabane) (Erigeron canadensis L.) and dogfennel (Eupatorium capillifolium (Lam.) Small) were evaluated for their ability to act as index plant species for soil Cd, Cr, Ni, and V at two field sites where these metals had been applied five yr previously to two highly weathered sandy Ultisols. Soil Cd was available to all analyzed plant tissues of all three plant species at both sites, particularly on the sandier Blanton soil. Chicory was an effective index plant for Cd on the finer textured Orangeburg soil but functioned as an indicator plant (toxicity symptoms were observed) on the sandier Blanton soil. Horseweed and dogfennel were effective index plants for Cd in both contaminated soils. Soil Cr, Ni, and V were less bioavailable than soil Cd and plant metal uptake was more sensitive to residual soil Cr, Ni, and V than was soil extraction with double acid. Horseweed and chicory may have potential as index plants for soil Cr. Chicory may have potential as a Ni index plant. Chicory and dogfennel may have potential as V index plants. |
| |
Keywords: | bioavailability cadmium chicory chromium Cichorium intybus contamination ecological risk assessment Erigeron canadensis Eupatorium capillifolium horseweed index plants index species metals nickel soil vanadium |
本文献已被 SpringerLink 等数据库收录! |
|