title: An experimental study on using rare earth elements to trace phosphorous losses from nonpoint sources.
abstract: Controlling phosphorous (P) inputs through management of its sources and transport is critical for limiting freshwater eutrophication. In this study, characteristics of exogenous rare earth elements (REEs) and P and their losses with surface runoff (both in the water and sediments) during simulated rainfall experiments (83 mm h⁻¹) were investigated. The results revealed that on average most REEs (La, 94%; Nd, 93%; Sm, 96%) and P (96%) transported with sediments in the runoff. The total amounts of losses of REEs and P in the runoff were significantly correlated, suggesting the possibility of using REEs to trace the fate of agricultural nonpoint P losses.
authors.affiliation: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
authors.forename: Lingqing
authors.initials: L
authors.lastname: Wang
authors.forename: Tao
authors.initials: T
authors.lastname: Liang
authors.forename: Peter J A
authors.initials: PJ
authors.lastname: Kleinman
authors.forename: Hongying
authors.initials: H
authors.lastname: Cao
mesh_terms: D000383:Agriculture; D004785:Environmental Pollutants / Q000737:chemistry*; D005240:Feasibility Studies; D019015:Geologic Sediments / Q000737:chemistry; D007753:Laboratories; D008674:Metals, Rare Earth / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012995:Solubility; D014867:Water / Q000737:chemistry
chemical_list: D004785:Environmental Pollutants; D008674:Metals, Rare Earth; D014867:Water; D010758:Phosphorus