Oil impact on the environment and aquatic organisms on the coasts of the states of Alagoas and Sergipe, Brazil - A preliminary evaluation

Soares, Emerson Carlos; Bispo, Mozart Daltro; Vasconcelos, Vivian Costa; Soletti, João Inácio; Carvalho, Sandra Helena Vieira; de Oliveira, Maria Janaína; dos Santos, Mayara Costa; dos Santos Freire, Emerson; Nogueira, Aryanna Sany Pinto; da Silva Cunha, Francisco Antônio; Sandes, Rafael Donizete Dutra; dos Santos, Raquel Anne Ribeiro; Neta, Maria Terezinha Santos Leite; Narain, N.; Garcia, Carlos Alexandre Borges; da Costa, Silvânio Silvério Lopes; Santos, Josué Carinhanha Caldas

Oil impact on the environment and aquatic organisms on the coasts of the states of Alagoas and Sergipe, Brazil - A preliminary evaluation

2021

The oil spill off the coast of the Brazilian Northeast region is one of the most significant global events regarding contamination and environmental impact in recent years. This work evaluates the effects of oil spills on the Northeast coasts between Alagoas and Sergipe states from October 2019 to January 2020. Analysis of some sampling points of seawater revealed the presence of Hg, Cd, Pb, and Cu in levels above the maximum concentration limits established by the Brazilian legislation. For water quality parameters, phosphorus, nitrite, and turbidity showed statistically different values. However, the chromatographic profiles of oil obtained from different beaches were quite similar. Seawater, fishes, and massunins (bivalve) presented the main polycyclic aromatic hydrocarbons: naphthalene, phenanthrene, fluoranthene, fluorene, and acenaphthalene. Therefore, the concentration of organic and inorganic contaminants determined in different environmental locations served as a subsidy to assess the effect of the preliminary oil spill on the Brazilian coast.

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