Contamination of soil with Americium (241Am) at nuclear sites in China poses a serious problem. We screened six plants, from five families, for their 241Am-enrichment potential. Europium (Eu), which is morphologically and chemically similar to the highly toxic 241Am, was used in its place. Moreover, the effects of sylvite, citric acid (CA), malic acid (MA), and humic acid (HA) on the absorption of 241Am by the plants, and its transport within them, were evaluated along with their effect on plant biomass and 241Am extraction volume. Barley and cabbage showed relatively stronger Eu accumulation capacities. Citric acid promoted the absorption of 241Am by barley roots and its transport within the plants. The effects of sylvite were not obvious and those of HA were the weakest in case of sunflower; HA, however, maximally increased the biomass of the plants. Our results could provide the basis for future radionuclide phytoremediation of contaminated soils.
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We would like to thank the associate researcher, Manfei Pu (Nuclear Physics and Chemistry Institute of Chinese Academy of Engineering Physics), and research assistant, Bo Wu, for their help and support in plant cultivation and sample preparation. The funding was provided by the National Natural Science Foundations of China (21577133).
Conflict of interest
The authors declare that they have no conflict of interest.
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Wang, P., Du, L., Tan, Z. et al. Effects of Organic Acids and Sylvite on Phytoextraction of 241Am Contaminated Soil. Bull Environ Contam Toxicol 98, 407–412 (2017). https://doi.org/10.1007/s00128-016-2004-3
- Hyperaccumulation factor
- Transport Factor
- Extraction efficiency