Xiao et al. (2012)

Xiao F., Simcik M. & Gulliver J. S. 2012. Perfluoroalkyl acids in urban stormwater runoff: Influence of land use. Water Research 46(2012) 6601-6608.
PFAA concentrations in rainfall at three heavy rain events, Aug. - Oct. 2010. Median values.