|
|
| Silva,Yuri Jacques Agra Bezerra da; Oliveira,Eliabe Barros de; Silva,Ygor Jacques Agra Bezerra da; Nascimento,Clístenes Williams Araújo do; Silva,Tatiana dos Santos; Boechat,Cácio Luiz; Teixeira,Marcos Paulo Rodrigues; Barbosa,Ronny Sobreira; Singh,Vijay P.; Sena,Antonny Francisco Sampaio de. |
| ABSTRACT: Environmental impacts caused by the addition of rare earth elements (REEs) to agricultural soils are a growing concern. The sedimentary basin of the Gurguéia River is located in one of the last agricultural frontiers in Brazil; nevertheless, data regarding quality reference values (QRVs) for REEs in soils are still scarce. The objective of this study was therefore to determine the natural concentration and establish the QRVs of REEs in soils of Gurguéia watershed, Brazil. Fifty-five composite soil samples were collected at sites under no or minimal anthropic interference. The average REE natural concentrations in soils from the Gurguéia watershed were lower than those found in other regions of Brazil and worldwide, following the order (mg kg−1):... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: REE geochemistry; Gurguéia watershed; Oxisols; Lanthanides. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000701401 |
| |
