Probing rare earth element distributions in soils of the mineralized Singhbhum region in India using INAA. (December 2020)

• Record Type: Journal Article
• Authors: Patra, A.C.; Lenka, P.; Sahoo, S.K.; Jha, S.K.; Kulkarni, M.S.
• Is Part Of: Applied radiation and isotopes. Volume 166(2020:Dec.)
• Publication Date: 2020-12
• Subjects: Rare earth element -- Soils -- Neutron activation analysis -- Geo-accumulation index -- Enrichment factor -- Rare earth anomaly; Radiology -- Periodicals; Radiation -- Industrial applications -- Periodicals; Nuclear chemistry -- Periodicals; Internet resource; Periodical; 660.298
• DOI: 10.1016/j.apradiso.2020.109360
• Languages: English
• ISSNs: 0969-8043

Abstract

Abstract: Rare Earth Elements were measured using Instrumental neutron activation analysis in soils from the uranium mineralized Singhbhum Thrust Belt. The trend of the Rare Earth Elements was Ce > La > Nd > Sm > Yb > Eu, Tb > Lu. Light Rare Earth enrichment and Heavy Rare Earth depletion, observed using indicator ratios, showed preferential association of Light Rare Earths with clays. Geo-accumulation index <1 and Enrichment factors ranging from 0.06 to 3.54 indicate none to moderate rare earth mineralization. A positive Ce anomaly and negative Eu anomaly indicate oxidative environment and plagioclase depletion, respectively. Highlights: REE spatial distribution patterns in soils of a uranium mineralized region in India. REE Enrichment studied using enrichment factor and geo-accumulation index. Pedogenic processes and redox conditions assessed by REE fractionation and anomalies. Redox conditions will help in predicting element and radionuclide migration.