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DIGITAL.CSIC
Doctoral thesis . 2011 . Peer-reviewed
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Contaminació per compostos orgànics persistents en el sistema fluvial del riu Ebre

Authors: Bosch i Suades, Carme;

Contaminació per compostos orgànics persistents en el sistema fluvial del riu Ebre

Abstract

The present PhD thesis is devoted to assess the impact that this chlorine-alkali plants has had in the lower course of the Ebre river basin. Firstly it evaluates the atmospheric emissions to the environment from the chlorine-alkali factory in Flix. Secondly it studies the mobilization downstream of the polluted sediments placed in Flix water reservoir and the impact of these industrial discharges in the agricultural soils irrigated with water collected downstream. It must be remembered that agriculture encompasses one of the main uses of river water in the Ebre river basin. Finally, the thesis is addressed to characterize the DDT residues in sediments and soils of the lower course of the Ebre river basin and to determine the origin of this pesticide that is currently banned in Spain.

Aquesta tesi estudia l’impacte que les plantes clor-àlcali de Flix i Montsó han tingut en el tram baix de la conca del riu Ebre. Primerament avalua la dispersió atmosfèrica dels contaminants emesos a Flix. En segon lloc estudia la mobilitat dels sediments contaminants dipositats a l’embassament de Flix aigües avall del riu i l’impacte en l’activitat agrícola d’aquest tram de riu. Finalment caracteritza els residus de DDT del tram baix de la conca del riu Ebre i determina l’origen d’aquest pesticida, actualment prohibit a l’Estat espanyol.

[EN] Persistent Organic Pollutants (POPs) are compounds which have shown to be toxic, persistent, bioaccumulable in animals and humans and with capacity of worldwide atmospheric transport, reaching remote areas where they have never been produced or used. In some specific areas such as the Ebre river basin, contamination by POPs is very high, mainly due to the industrial activity from two chlorine-alkali plants situated in Flix (Tarragona Province, Catalonia) and Monzón (Huesca Province, Aragón).

[CAT] Els compostos orgànics persistents (COPs) són tòxics, persistents, bioacumulables, tenen una gran estabilitat química i capacitat per distribuir-se per tot el planeta. La contaminació per aquests compostos en diversos trams del riu Ebre és molt elevada en comparació als nivells descrits a la Península Ibèrica i en sistemes d’aigües continentals del món, principalment a causa de l’activitat de les plantes clor-àlcali de Flix (província de Tarragona) i Montsó (província d’Osca).

Aquest treball ha gaudit del support del Ministerio de Ciencia e Innovación i del Consell Superior d'Investigacions Científiques mitjaçant una beca predoctoral per a la formació de personal investigador (beca-IP-BDP2004).

Tesis del Departament de Química Analítica de la Universitat de Barcelona (UB). Fecha de defensa 23.09.2009.

Peer reviewed

Country
Spain
Keywords

Contaminació de l'aigua, Ebro River (Spain), Transferència contaminants sòl-planta, Ebre (Espanya : Curs d'aigua), Compostos orgànics persistents, Ciències Experimentals i Matemàtiques, 543, DDT, Compostos orgànics, Water pollution, Planta clor-alcalí, Organic compounds, Curs d'aigua) [Ebre (Espanya], Dispersió atmosfèrica

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