Chelator effects on bioconcentration and translocation of cadmium by hyperaccumulators, Tagetes patula and Impatiens walleriana
Journal
Ecotoxicology and Environmental Safety
Journal Volume
84
Journal Volume
84
Pages
173-178
Start Page
173
End Page
178
ISSN
10902414
Date Issued
2012-10-01
Author(s)
Abstract
French marigold (Tagetes patula) and impatiens (Impatiens walleriana) can act as hyperaccumulator plants for removal of cadmium (Cd) from contaminated sites. In this study, an exponential decay model was used to predict the maximum removal of Cd from artificially spiked soils by impatiens. Application of a chelator, EDTA, was also assessed for effects on the bioconcentration (BCF) and translocation (TF) factors of the two species with four replicates. Exposure to Cd significantly decreased the biomass of two plant species. Impatiens and French marigold accumulated Cd at a rate of 200-1200 mg Cd kg(-1) in shoots, with BCFs and TFs of 8.5-15 and 1.7-2.6, respectively.
Subjects
Bioconcentration factor (BCF)
Cadmium (Cd)
EDTA
French marigold
Impatiens
Translocation factor (TF)
SDGs
Type
journal article