Source and Ecological Risk Characteristics of PAHs in Sediments from Qinhuai River and Xuanwu Lake, Nanjing, China

Table 4

Factor profiles ( matrix) of individual PAHs in each of the three PMF factors identified in the analysis of Qinhuai River sediment data set.

PAHs	Factor profiles obtained from PMF (% of species)
	Factor 1	Factor 2	Factor 3
Nap	0.000	0.178	0.822
Ace	0.013	0.000	0.987
Flu	0.313	0.580	0.107
Phe	0.106	0.567	0.327
Ant	0.457	0.157	0.386
Fla	0.055	0.076	0.869
Pyr	0.000	1.000	0.000
BaA	0.655	0.163	0.182
Chr	0.043	0.333	0.625
BbF	0.673	0.015	0.312
BkF	0.493	0.500	0.007
BaP	0.477	0.523	0.000
DahA	0.845	0.000	0.155
BghiP	0.547	0.353	0.100
Estimated source	Traffic-related, biomass > coal combustion	Biomass and coal combustion, = or > diesel and gasoline combustion sources	Petroleum source > coal combustion
Rate (%)	33.4	25.3	34.9