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Wyatt NLP, Costa VC, de Souza JR, Ferde M, Costa FS, Neris JB, Brandão GP, Guedes WN, Carneiro MTWD. Unsupervised pattern-recognition and radiological risk assessment applied to the evaluation of behavior of rare earth elements, Th, and U in monazite sand. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:83417-83425. [PMID: 35763145 DOI: 10.1007/s11356-022-21632-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 06/19/2022] [Indexed: 06/15/2023]
Abstract
The Brazilian coast is rich in monazite which is found in beach sand deposits. In this study, the composition of the monazite sands from beaches of State of Espírito Santo, Brazil, was investigated. The concentrations of rare earth elements (REEs), Th, and U were determined by inductively coupled plasma mass spectrometry (ICP-MS). In the studied region, the mean concentration of investigated elements increased in the following order: Tm < Yb < Ho < Lu < Eu < Er < Tb < Dy < U < Y < Th < Gd < Sm < Pr < Nd < La < Ce. The sampling sites were classified into three clusters and discriminated by the concentrations of REEs, Th, and U found. In general, the radiological risk indices were higher than the established limits, and the risk of developing cancer was estimated to be higher than the world average.
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Affiliation(s)
- Nathalia Luiza P Wyatt
- Spectrometry Atomic Laboratory (LEA)/LabPetro, Department of Chemistry, Federal University of Espírito Santo, Vitória, ES, 29075-910, Brazil
| | - Vinicius C Costa
- Spectrometry Atomic Laboratory (LEA)/LabPetro, Department of Chemistry, Federal University of Espírito Santo, Vitória, ES, 29075-910, Brazil
| | - Jefferson R de Souza
- Spectrometry Atomic Laboratory (LEA)/LabPetro, Department of Chemistry, Federal University of Espírito Santo, Vitória, ES, 29075-910, Brazil
| | - Merisnet Ferde
- Spectrometry Atomic Laboratory (LEA)/LabPetro, Department of Chemistry, Federal University of Espírito Santo, Vitória, ES, 29075-910, Brazil
| | - Floriatan S Costa
- Department of Chemistry, Federal University of Paraná, Curitiba, PR, 81531-980, Brazil
| | - Jordan B Neris
- Department of Chemistry, Universidade Federal Do São Carlos, São Carlos, SP, 13565-905, Brazil
| | - Geisamanda P Brandão
- Spectrometry Atomic Laboratory (LEA)/LabPetro, Department of Chemistry, Federal University of Espírito Santo, Vitória, ES, 29075-910, Brazil
| | | | - Maria Tereza W D Carneiro
- Spectrometry Atomic Laboratory (LEA)/LabPetro, Department of Chemistry, Federal University of Espírito Santo, Vitória, ES, 29075-910, Brazil.
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