Occurrence of Natural Contaminants of Emerging Concern in the Douro River Estuary, Portugal

Archives of Environmental Contamination and Toxicology
Ana Rita RibeiroCláudia Maria Rosa Ribeiro

Abstract

Many studies demonstrated the presence of diverse environmental contaminants in the Douro River estuary, such as natural and synthetic estrogens, pharmaceuticals, industrial compounds and pesticides. This estuary is located between two densely populated cities and is highly impacted due to anthropogenic activities, such as industry and agriculture. Although the presence of mycotoxins and phytoestrogens, such as lignans and coumestrans, in the aquatic environment is reported by some authors, their occurrence in Portuguese waters was not investigated yet. To evaluate the presence of phytoestrogens, phytosterols and mycotoxins in Douro River estuary, water samples were collected seasonally at nine sampling points, preconcentrated by solid phase extraction and analysed by gas chromatography mass spectrometry. Local flora was collected on the riverside, in the same sampling points, for identification and evaluation of the possible relation to the presence of phytoestrogens and/or phytosterols in the estuarine water. Results showed the ubiquitous presence of mycotoxins, namely deoxynivalenol up to 373.5 ng L(-1). Both phytoestrogens and phytosterols showed a possible seasonal fluctuation, which is in accordance to the life cycle of t...Continue Reading

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Citations

Jul 14, 2016·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Cláudia M R RibeiroMaria E Tiritan
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Mar 20, 2021·The Science of the Total Environment·Carina DeichJoanna J Waniek
Sep 10, 2021·Environmental Science and Pollution Research International·Aloma Santin MenegassoLuciana Grazziotin Rossato-Grando

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