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AUSTRALIA-WIDE ASSESSMENT OF PERFLUOROALKYL SUBSTANCES (PFASS) IN LANDFILL LEACHATES
Gallen, C., D. Drage, G. Eaglesham, S. Grant, M. Bowman, and J.F. Mueller.
Journal of Hazardous Materials 331:132-141(2017)

In an analysis of leachate from 27 landfills for nine perfluoroalkyl substances (PFASs), five PFASs were detected ubiquitously, with perfluorohexanoate (PFHxA) predominant. Some general trends in PFAS concentrations were observed. Mean concentrations of eight PFASs were higher in operating landfills/landfill cells accepting mainly municipal waste, compared to closed municipal landfills. Landfills accepting primarily construction and demolition wastes produced leachate that had higher mean PFAS concentrations than municipal landfills. Significant relationships were observed between selected PFAS concentrations and landfill age as younger landfills appeared to have a higher burden of waste containing PFASs (or their precursors). Increasing pH and total organic carbon in leachate were associated with increased concentrations of several PFASs.



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