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Godwyn-Paulson, P., M.P., Jonathan, P.F., Rodríguez-Espinosa & G.M., Rodríguez-Figueroa (2022). Rare earth element enrichments in beach sediments from Santa Rosaliamining region, Mexico: An index-based environmental approach . Marine Pollution Bulletin. 174: 103732. DOI: 10.1016/j.marpolbul.2021.113271.

Rare earth element enrichments in beach sediments from Santa Rosaliamining region, Mexico: An index-based environmental approach

P. Godwyn-Paulson 1, M.P. Jonathan 1, P.F. Rodríguez-Espinosa 1 y Griselda Margarita Rodríguez-Figueroa 2

1 Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), IPN
2 Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Oceanología
Baseline data on concentration, fractionation, pollution level and ecological risk index for seventeen beachsediments from Santa Rosalia mining region of Baja California Sur, Mexico were assessed. Higher concentrationsof Rare Earth Elements (REEs) (mean. 341.49 µg/g) indicated that it is higher than most of the mining regionsaround the world. Normalization pattern showed enrichment of Eu (>4) and calculated geochemical indicesrevealed that light and middle REEs are moderately polluted with most of the sampling points located closer tothe river discharge. Potential Ecological Risk Index (PERI) showed that Eu (20.2), Tb (20.88), and Lu (28.57)pose moderate ecological risk to the soil at selected stations (10, 11, 15 and 16) with a risk index value rangingfrom 245 to 359. Pearson's correlation matrix suggested that all REEs are highly correlated (r2 0.95) with eachother having similar geochemical characteristics and indicating identical source due to continuous miningactivity. 

Palabras clave: Beach sediment; Rare earth elements; Potential ecological risk index; Geochemical indices; Mining Santa Rosalía México

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