Occurrence and Sources of Priority Polycyclic Aromatic Hydrocarbons in Sediment Samples along the Aurá River (Northern Brazil)
Occurrence and Sources of Priority Polycyclic Aromatic Hydrocarbons in Sediment Samples along the Aurá River (Northern Brazil)
| dc.contributor | en-US | |
| dc.contributor | pt-BR | |
| dc.creator | Santos, Camila Carneiro dos | |
| dc.creator | Soares, Lorena da Silva | |
| dc.creator | Corrêa, José Augusto Martins | |
| dc.date | 2017-01-18 | |
| dc.date.accessioned | 2023-06-19T16:50:36Z | |
| dc.date.available | 2023-06-19T16:50:36Z | |
| dc.identifier | https://ppegeo.igc.usp.br/index.php/geobras/article/view/10323 | |
| dc.identifier | 10.21715/GB2358-2812.2016301026 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/6693978 | |
| dc.description | Polycyclic aromatic hydrocarbons (PAHs) are organic compounds generated by the organic matter incomplete combustion and there are sixteen PAHs (16- USEPA-PAHs) considered as priority in environmental studies by the Environmental Protection Agency of the United States. The aims of this work were to determine the major source and spatial variations of the 16-USEPAPAHs in the sediments of Aurá river, State of Pará, northern Brazil. North of the Aurá river exists a landfill site, currently disabled, which operated in an uncontrolled and irregular manner for about 24 years. PAHs were identified and quantified in sediment from 10 sites inside the river and in its mouth. The samples were analyzed by HPLC/UV-Vis-DAD to assess the degree of contamination. Total PAH concentrations (ΣPAHs) ranged from 3 824.21 to 15 693.91 ng g-1 . In general, a concentration gradient was observed. The sediment samples were classified as highly contaminated (ΣPAHs > 500 ng g- 1 ). Compared to other areas, PAH concentrations in Aurá river are relatively similar to highly industrialized and polluted places. The ratios of low molecular weight/high molecular weight PAHs (LMW/HMW), indicates a pyrolytic origin, which have shown to be mostly from waste combustion. | en-US |
| dc.description | Hidrocarbonetos aromáticos policíclicos (HAP) são compostos orgânicos gerados pela combustão incompleta de matéria orgânica e há dezesseis PAHs (16 USEPA-HPA) considerados prioritários em estudos ambientais por parte da Agência de Proteção Ambiental dos Estados Unidos. Os objetivos deste trabalho foram determinar as principais variações de origem e espaciais do 16-USEPA-PAHs nos sedimentos do rio Aura, Estado do Pará, norte do Brasil. Ao norte do rio Aurá existe um aterro sanitário, atualmente desativado, que funciou de forma descontrolada e irregular por cerca de 24 anos. PAHs foram identificados e quantificados em sedimentos de 10 locais dentro do rio e em sua foz. As amostras foram analisadas por HPLC/UV-VisDAD para avaliar o grau de contaminação. Concentrações totais de PAH (ΣPAHs) variaram de 3 824,21-15 693,91 ng g-1. Em geral, observou-se um gradiente de concentração. As amostras de sedimentos foram classificadas como altamente contaminadas (ΣPAHs> 500 ng g-1). Em comparação com outras áreas, as concentrações de PAH no rio Aurá são relativamente semelhantes aos lugares altamente industrializados e poluídos. As razões de alto peso molecular / baixo peso molecular de PAHs (LMW/ HMW), indicam uma origem pirolítica, que demonstrou-se terem sido gerados principalmente a partir da combustão de resíduos | pt-BR |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Sociedade Brasileira de Geoquímica | en-US |
| dc.relation | https://ppegeo.igc.usp.br/index.php/geobras/article/view/10323/9621 | |
| dc.rights | Direitos autorais 2017 Geochimica Brasiliensis | pt-BR |
| dc.source | Geochimica Brasiliensis; v. 30, n. 1 (2016); 26-32 | en-US |
| dc.source | Geochimica Brasiliensis; v. 30, n. 1 (2016); 26-32 | pt-BR |
| dc.source | 2358-2812 | |
| dc.source | 0102-9800 | |
| dc.subject | Polycyclic aromatic hydrocarbons; Amazon river; High performance liquid chromatography. | en-US |
| dc.subject | Hidrocarbonetos aromáticos policíclicos; Rio Amazonas; Cromatografia líquida de alta performance. | pt-BR |
| dc.title | Occurrence and Sources of Priority Polycyclic Aromatic Hydrocarbons in Sediment Samples along the Aurá River (Northern Brazil) | en-US |
| dc.title | Occurrence and Sources of Priority Polycyclic Aromatic Hydrocarbons in Sediment Samples along the Aurá River (Northern Brazil) | pt-BR |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | en-US | |
| dc.type | pt-BR |