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Environmental impacts of current and past petroleum activities on water quality in Ecuador

Abstract : Spills and discharges of solid and liquid residues caused by the oil industry in Ecuador have resulted in the presence of pollutants with a high content of hydrocarbons (PAHs and BTEX) and metal elements (salts), which are known for their acute and/or chronic toxicity. This study aims to assess the quality of the aquatic environment in three watersheds (Esmeraldas, Napo and Aguarico) in the extraction and refining zones in order to determine the level of environmental and human risk from different water sources. The sources analyzed are in compliance with environmental guidelines and are defined as "non-toxic". Pollution from oil activities is punctual. Urbanization and agriculture are also visualized as stress factors for water bodies. Human risk is mainly related to low water mineralization and in some cases to the presence of inorganic elements (Mn, As, Al and Zn).
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Submitted on : Friday, July 10, 2020 - 2:56:11 PM
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Fausto López Medina. Environmental impacts of current and past petroleum activities on water quality in Ecuador. Hydrology. Université Paul Sabatier - Toulouse III, 2019. English. ⟨NNT : 2019TOU30063⟩. ⟨tel-02896406⟩

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