In-situ partitioning and bioconcentration of polycyclic aromatic hydrocarbons among water, suspended particulate matter, and fish in the Dongjiang and Pearl Rivers and the Pearl River Estuary, China.
The partitioning and bioaccumulation of polycyclic aromatic hydrocarbons (PAHs) in water, suspended particulate matter (SPM), and fish samples from the Dongjiang River (DR), Pearl River (PR), and the Pearl River Estuary (PRE) were examined. Although PAHs are much lower in PRE than in DR or PR, PAHs in some fish species are significantly higher in PRE than in DR or PR. Aqueous or particulate PAHs respectively show significant correlations with dissolved organic carbon, particulate organic matter, and chlorophyll a, suggesting that biological pumping effect regulates their distribution. The in situ partitioning coefficients (logKoc) for PAHs are one order magnitude higher than the empirical logKoc-logKow correlation. The bioconcentration factor (BCF) is slightly higher for the marine fish than for the freshwater fish. The above phenomena indicate that BCF may vary due to the diversity of fish species, feeding habits, and metabolism of PAHs in fish.
['Li|Haiyan|H|', 'Lu|Lei|L|', 'Huang|Wen|W|', 'Yang|Juan|J|', 'Ran|Yong|Y|']
D000818:Animals D002681:China D063366:Estuaries D005399:Fishes D052638:Particulate Matter D011084:Polycyclic Aromatic Hydrocarbons D045483:Rivers D014874:Water Pollutants, Chemical
Polycyclic aromatic hydrocarbons Fish Partition coefficient Bioconcentration factors River water