[Dynamic fugacity model for describing the fate of persistent organic pollutants in the river].
Dynamic model depending on temperature with fugacity approach is formulated which describes the fate of Persistent Organic Pollutants (POPs) in a river. The fugacity capacity, the degradation rate and transfer coefficients of pollutants are depending on temperature in the model. The model is illustrated by calculating the fate of gamma-HCH in Liao River. The results show that from 273K to 298K, the fugacity capacities in air, water and sediment of gamma-HCH are respectively reduced in 8.4%, 89.7% and 89.7%. However, in the same range of temperature, the degradation rate coefficients in air, water and sediment, and volatilization and diffusion rate coefficients of gamma-HCH are increased in 0.69, 22.0, 4.5, 7.9 and 1.6 times, respectively. The calculated value agree well with the field observed value in the order of magnitude, which shows that the model is appropriate for simulating the fate of POPs in a long time.
Liu
Zhen-Yu
ZY
Department of Environmental Science and Technology, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116012, China.
Yang
Feng-Lin
FL
Quan
Xie
X
Zhang
Xiao-Hong
XH
D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000032:analysis; D001556:Hexachlorocyclohexane / Q000032:analysis*; D007306:Insecticides / Q000032:analysis; D008962:Models, Theoretical; D009930:Organic Chemicals / Q000032:analysis*; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007306:Insecticides; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D001556:Hexachlorocyclohexane