title: Uranium accumulation by aquatic plants from uranium-contaminated water in Central Portugal.
abstract: Several species of plants have developed a tolerance to metal that enables them to survive in metal contaminated and polluted sites. Some of these aquatic plants have been reported to accumulate significant amounts of specific trace elements and are, therefore, useful for phytofiltration. This work focuses the potential of aquatic plants for the phytofiltration of uranium (U) from contaminated water. We observed that Callitriche stagnalis, Lemna minor, and Fontinalis antipyretica, which grow in the uraniferous geochemical province of Central Portugal, have been able to accumulate significant amounts of U. The highest concentration of U was found in Callitriche stagnalis (1948.41 mg/kg DW), Fontinalis antipyretica (234.79 mg/kg DW), and Lemna minor (52.98 mg/kg DW). These results indicate their potential for the phytofiltration of U through constructed treatment wetlands or by introducing these plants into natural water bodies in the uraniferous province of Central Portugal.
authors.affiliation: Department of Earth Sciences, Faculty of Sciences and Technology, University of Coimbra, Portugal.
authors.forename: João
authors.initials: J
authors.lastname: Pratas
authors.forename: Paulo J C
authors.initials: PJ
authors.lastname: Favas
authors.forename: Carlos
authors.initials: C
authors.lastname: Paulo
authors.forename: Nelson
authors.initials: N
authors.lastname: Rodrigues
authors.forename: M N V
authors.initials: MN
authors.lastname: Prasad
mesh_terms: D000818:Animals; D029064:Araceae / Q000378:metabolism*; D019068:Bryopsida / Q000378:metabolism*; D002143:Callitrichinae / Q000378:metabolism*; D004784:Environmental Monitoring; D006863:Hydrogen-Ion Concentration; D008670:Metals / Q000032:analysis / Q000378:metabolism; D011174:Portugal; D013997:Time Factors; D014501:Uranium / Q000032:analysis / Q000378:metabolism*; D014873:Water Pollutants / Q000032:analysis / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*
chemical_list: D008670:Metals; D014873:Water Pollutants; D014501:Uranium