| Full text | |
| Author(s): |
Duleba, Wania
;
Gubitoso, Silas
;
Alves Martins, Maria Virginia
;
Teodoro, Andreia Cristiane
;
Pregnolato, Leonardo Antonio
;
Prada, Silvio Miranda
Total Authors: 6
|
| Document type: | Journal article |
| Source: | JOURNAL OF SEDIMENTARY ENVIRONMENTS; v. 4, n. 4, p. 16-pg., 2019-10-01. |
| Abstract | |
The Petroleum Terminal Pipeline "Dutos e Terminais do Centro Sul (DTCS)" is one of the largest petroleum terminals in Brazil. To assess wastewater treatment efficiency of the DTCS and to evaluate the contamination by potentially toxic elements (PTE) of sediments, ten sampling points were studied near the riser output of the submarine outfall in the summer of 2005, 2006 and 2007, and ten sampling points were studied along the Sao Sebastiao Channel (CSS). All data were above the standards required by the Brazilian salt water/brackish Water Directives (CONAMA Resolution 454/2012). However, the sediments near the submarine outfall were enriched by As and Cu, with concentrations exceeding the threshold effect level (TEL). In 2005 and 2006, the concentrations of Ba, Sr, Ni and Pb exceeded the values established by TEL in some places. Concentrations of As were 69 times higher than that measured in the background station. In 2007, all the analyzed metals almost doubled the concentrations of that found in 2005. High concentrations of PTE in the sediments, namely Ba and As, are a source of contamination that should be considered for the water quality management planning of the DTCS system. (AU) | |
| FAPESP's process: | 09/51031-8 - Geoenvironmental analysis, with emphasis on heavy metals and benthic foraminifera in marine areas affected by domestic and petrochemical sewage |
| Grantee: | Wânia Duleba |
| Support Opportunities: | Regular Research Grants |