title: The abundances of rarer trace elements in paddy (rice) soils of Sri Lanka.
abstract: Concentrations of Ti, Ga, As, Sc, Zr, Sn, Hf, Th, U and Y have been determined for 70 paddy soils from 14 villages, selected throughout Sri Lanka by means of ICP-MS. The mean elemental contents of all paddy soil samples were 6120 Ti, 14.1 Ga, 0.84 As, 7.26 Sc, 129 Zr, 2.27 Sn, 3.64 Hf, 12.71 Th, 1.53 U, and 13.35 Y (all data in microg/g). Paddy soils were classified into groups based on morphology and climate. Higher contents of Th and U were found in the wet zone lowland soils whereas the higher Ti contents were observed in dry zone soils. Arsenic, Zr and Hf contents were comparatively similar in all regions. Factor analysis was used to identify the relationships between the contents of elements.
authors.affiliation: Department of Geology, University of Peradeniya, Peradeniya, Sri Lanka. rohanac@hotmail.com
authors.forename: Rohana
authors.initials: R
authors.lastname: Chandrajith
authors.forename: Chandra B
authors.initials: CB
authors.lastname: Dissanayake
authors.forename: Heinz J
authors.initials: HJ
authors.lastname: Tobschall
mesh_terms: D000383:Agriculture; D002980:Climate; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D013058:Mass Spectrometry; D008670:Metals / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013188:Sri Lanka
chemical_list: D008670:Metals; D012987:Soil