Abstract
A survey of perfluorinated chemicals (PFCs) deposition during winter was performed at rural areas and hinterlands in Hokkaido (9 points). The depositions were calculated from the concentrations of PFCs in snow covers. The PFCs concentrations were 2.3 ∼ 12 ng/kg. PFBA was the dominant compound, and PFOA and PFNA were also detected. The deposition amounts and amount rates of PFCs were 0.38 ∼ 8.6 μg/m2 and 5.7 ∼ 95 ng/m2/day, respectively. They were high in the area along the Sea of Japan. The concentrations of some of PFCs among detected PFCs were higher than those in the snowfall at metropolitan area. The result shows not only wet deposition but dry deposition and/or chemical reaction of precursors also contributed to the deposition during the winter.
