Data/hora: 13/06/2024 08:09:06

Provedor de dados: 	5	
País: 	France	
Título: 	Determining sedimentary material sources in a Brazilian urban lake using Zn stable isotope compositions of bottom sediments: a preliminary study	
Autores: 	Ferreira Araujo, Daniel; Boaventura, Geraldo; Mulholland, Daniel; Garnier, Jeremie; Machado, Wilson; Babinski, Marly; Dantas, Elton.	
Data: 	2020-12	
Ano: 	2020	
Palavras-chave: 	Stable isotopes; MC-ICP-MS; Mass spectrometry; Environmental pollution; Metal contamination; Weathering; Zinc isotopes.	
Resumo: 	Zinc isotopes ratios provide qualitative and quantitative information about contributions from different Zn sources in the environment. Here we present the results of a preliminary study to identify the main sources controlling Zn isotope signatures of sediments from Lake Paranoá (Brazil), an urban water reservoir. The Zn isotope ratios were measured by MC-ICP-MS and expressed as δ66/64Zn notation relative to the JMC 3-0749-L solution. The studied sediments showed a narrow isotopic range (+0.00 to +0.13 ‰; n = 10) similar to that reported for intensely weathered soils worldwide (from -0.4 to +0.2‰). The geoaccumulation index (Igeo) also suggests low or negligible influence of Zn anthropogenic source. This research provides a baseline assessment of the Zn isotopes signatures in lake sedimentary environments under the influence of these weathered soils.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	https://archimer.ifremer.fr/doc/00666/77763/79899.pdf

DOI:10.21715/GB2358-2812.2020342130

https://archimer.ifremer.fr/doc/00666/77763/	
Editor: 	Geochimica Brasiliensis	
Formato: 	application/pdf	
Fonte: 	Geochimica Brasiliensis (01029800) (Geochimica Brasiliensis), 2020-12 , Vol. 34 , N. 2 , P. 130-137	
Fonte: 	info:eu-repo/semantics/openAccess

restricted use