title: Effects of Organic Acids and Sylvite on Phytoextraction of241Am Contaminated Soil.
abstract: Contamination of soil with Americium (241Am) at nuclear sites in China poses a serious problem. We screened six plants, from five families, for their241Am-enrichment potential. Europium (Eu), which is morphologically and chemically similar to the highly toxic241Am, was used in its place. Moreover, the effects of sylvite, citric acid (CA), malic acid (MA), and humic acid (HA) on the absorption of241Am by the plants, and its transport within them, were evaluated along with their effect on plant biomass and241Am extraction volume. Barley and cabbage showed relatively stronger Eu accumulation capacities. Citric acid promoted the absorption of241Am 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.
authors.affiliation: Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang City, 621900, Sichuan Province, China. wle839@126.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Wang
authors.affiliation: Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang City, 621900, Sichuan Province, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Du
authors.affiliation: Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang City, 621900, Sichuan Province, China.
authors.forename: Zhaoyi
authors.initials: Z
authors.lastname: Tan
authors.affiliation: Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang City, 621900, Sichuan Province, China.
authors.forename: Rongbo
authors.initials: R
authors.lastname: Su
authors.affiliation: Institute of Nuclear Physics and Chemistry, Chinese Academy of Engineering Physics, Mianyang City, 621900, Sichuan Province, China.
authors.forename: Taowen
authors.initials: T
authors.lastname: Li
mesh_terms: D001673:Biodegradation, Environmental / Q000187:drug effects*; D018533:Biomass; D002681:China; D019343:Citric Acid / Q000494:pharmacology*; D005063:Europium / Q000032:analysis*; D006812:Humic Substances; D008293:Malates / Q000494:pharmacology*; D010944:Plants / Q000737:chemistry* / Q000187:drug effects; D011189:Potassium Chloride / Q000494:pharmacology*; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D006812:Humic Substances; D008293:Malates; D012989:Soil Pollutants; D019343:Citric Acid; D005063:Europium; D011189:Potassium Chloride; C030298:malic acid
keywords: 241Am; Extraction efficiency; Hyperaccumulation factor; Phytoextraction; Transport Factor