[DDTs transport between sediment and water in the mainstream of Haihe River in the urban area].
DDTs concentrations in surface water and sediment were measured from August 2007 to March 2008 in the mainstream of Haihe River. The results showed that DDTs concentrations ranged from 6.88-78.82 ng/L (mean 28.54 ng/L) in surface water, 5.82-45.5 ng/g (mean 21.55 ng/g) in sediment. The dominant DDTs form in surface water and sediment was found to be p, p'-DDT and p, p'-DDE, respectively. A steady state fugacity model (sediment-water exchange model) was established and successfully applied to the field data for p, p'-DDT in Haihe River. The parameter sensitivity analysis showed that sediment-water exchange of p, p'-DDT was mainly influenced by biodegradation rate constant, suspended particle-water partition coefficient and particle settling flux.
Chi
Jie
J
School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China. cjiechi@yahoo.com
Zhang
Xuan
X
D001673:Biodegradation, Environmental; D002681:China; D003634:DDT / Q000032:analysis*; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D007306:Insecticides / Q000032:analysis*; D010316:Particle Size; D045483:Rivers; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007306:Insecticides; D014874:Water Pollutants, Chemical; D003633:Dichlorodiphenyl Dichloroethylene; D003634:DDT