| Texto completo | |
| Autor(es): |
Kim, Bianca Sung Mi
[1]
;
Figueira, Rubens Cesar Lopes
[1]
;
Angeli, Jose Lourenco Friedmann
[1]
;
Ferreira, Paulo Alves Lima
[1]
;
de Mahiques, Michel Michaelovich
[1, 2]
;
Bicego, Marcia Caruso
[1]
Número total de Autores: 6
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo IOUSP, Inst Oceanog, Praca Oceanog 191, BR-05508120 Butanta, SP - Brazil
[2] Univ Sao Paulo, Inst Energia & Ambiente, Ave Prof Luciano Gualberto 1289, BR-05508010 Butanta, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH; v. 43, n. 1, p. 47-63, JAN 2021. |
| Citações Web of Science: | 1 |
| Resumo | |
Lead has been widely used since antiquity, but its uses drastically increased during the Industrial Revolution. The global emission of Pb into the environment was mainly due to tetraethyl lead added to gasoline as an antiknock additive. Because of its toxicity and neurological effects, the compound was phased out in the 1980s. Isotopic signatures are widely applied to differentiate sources of Pb; however, this is an expensive and sophisticated analysis compared to elemental analysis. Thus, this study aims to gain insight into leaded gasoline registered in mud depocenters from the southeastern Brazilian coast using multivariate statistical tools on elemental analysis data of trace elements. Seven multiple cores were collected on board the Research Vessel Alpha Crucis. Al, As, Ba, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Ni, P, Pb, Sc, Sr, V and Zn were analyzed by acid digestion and quantified by ICP-OES. Levels and enrichment factors of Pb resulted in homogeneous columns, indicating that small variations in concentrations can be attributed to grain size differences, not presenting contaminated levels. From statistical results, the highest contribution on the first component was represented by a lithogenic source with the leaching of continental rocks. Lead content was notable in its high loadings in other components, which suggests atmospheric deposition. An increase in these components in subsurface samples from vertical profiles between 1935 and 1996 could represent a fingerprint of the consumption of leaded gasoline in Brazil between 1923 and 1989. Thus, statistical analysis of elemental data enabled to infer possible sources and pathways of Pb to the environment, without isotopic analysis. (AU) | |
| Processo FAPESP: | 17/08987-0 - Mudbelts do sul e sudeste do Brasil: um arquivo geoquímico para investigação de impactos antropogênicos |
| Beneficiário: | Bianca Sung Mi Kim |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 15/17763-2 - Mudbelts do Sul e Sudeste do Brasil: implicações sobre as influências antrópicas no ambiente marinho |
| Beneficiário: | Márcia Caruso Bícego |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |