AMINOT, Yann; LE MENACH, Karyn; PARDON, Patrick; ETCHEBER, Henri; BUDZINSKI, Hélène

doi:10.1016/j.marchem.2016.05.010

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AMINOT, Yann
Environnements et Paléoenvironnements OCéaniques [EPOC]

LE MENACH, Karyn

Environnements et Paléoenvironnements OCéaniques [EPOC]

PARDON, Patrick
Environnements et Paléoenvironnements OCéaniques [EPOC]

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Marine Chemistry. 2016-10, vol. 185, p. 3-11

Elsevier

Résumé en anglais

Pharmaceuticals were screened in the estuarine Garonne River to investigate the role of estuaries as passive or active transfer compartments in the removal of these compounds. Monthly monitoring of 53 pharmaceuticals from various therapeutic classes at 6 sampling points over 18 months showed that most compounds were frequently detected with median concentrations in the low ng L− 1 range. Saline intrusion was responsible of an overall dilution but an enrichment from the treated urban effluents of Bordeaux city was also observed with increases resulting from this input being compound dependent. An average cumulated load of 10 kg of the monitored pharmaceuticals was found to enter the estuary daily from the catchment area. After normalization to the persistent marker carbamazepine, a large majority of the compounds were found to exhibit in-stream attenuation during summer while this removal was enhanced farther down the estuary, indicating a likely effect of residence time, temperature and suspended solid concentration on the stability of the pharmaceuticals.< Réduire

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Pharmaceuticals

Estuary

Persistence

In-stream attenuation

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Inputs and seasonal removal of pharmaceuticals in the estuarine Garonne River

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