C7-C10 perfluorinated carboxylates (PFACs) and perfluorooctansulfonate (PFOS) were analysed in selected stretches of the River Po and its major tributaries. Analyses were performed by solid-phase extraction (SPE) with Oasis® HLB cartridges and methanol elution followed by LC-MS-MS detection using 13C-labelled internal standards. High concentration levels (~1.3 microg L-1) of perfluorooctanoate (PFOA) were detected in the Tánaro River close to the city Alessandria. After this tributary, levels between 60-337 ng L-1 were measured in the Po River on several occasions. Considering an approximate discharge flow of 1540 m3 per second and a medium PFOA concentration of ~100 ng L-1 in the water, it has been estimated a load of ~ 0.5 kg PFOA per hour or ~ 4 tons per year discharged in the Adriatic Sea.
LOOS Robert;
LOCORO Giovanni;
HUBER Tania;
WOLLGAST Jan;
CHRISTOPH Eugen;
DE JAGER Alfred;
GAWLIK Bernd;
HANKE Georg;
UMLAUF Gunther;
ZALDIVAR COMENGES Jose';
2008-02-28
PERGAMON-ELSEVIER SCIENCE LTD
JRC37293
0045-6535,
https://publications.jrc.ec.europa.eu/repository/handle/JRC37293,
10.1016/j.chemosphere.2007.09.022,
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