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C 7 –C 11 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 13 C-labelled internal standards. High concentration levels (∼1.3μgl...
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