title: Contamination of selected organochlorine pesticides (OCPs) in sediment from CauBay River, Hanoi.
abstract: This work investigated the contamination status of selected organochlorine pesticides (OCPs: p,p'-DDT, p,p'-DDE, p,p'-DDD, α, β, γ, δ-HCH) in sediment of the CauBay river. Wide occurrence and remarkable residue levels of these two OCPs have been found in the study areas. ΣDDT concentrations ranged from 51.84 to 92.76 ng.g(-1) dry weight, whereas ΣHCH concentrations ranged from 4.56 to 11.39 ng g(-1) dry weight. All of the sampling sites exceeded the effects range median levels for DDT (>46.1 ng g(-1)). The analyzed results show that ΣDDT and ΣHCH displayed uniform high and low distribution, respectively. There is no recent input of DDT and HCH in the study area.
authors.affiliation: Vietnam Water Resources University, 175 Tay Son Street, Hanoi, Vietnam. vuductoan@wru.edu.vn
authors.forename: Vu Duc
authors.initials: VD
authors.lastname: Toan
mesh_terms: D004784:Environmental Monitoring; D008401:Gas Chromatography-Mass Spectrometry; D019015:Geologic Sediments / Q000032:analysis*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D010573:Pesticide Residues / Q000032:analysis*; D014744:Vietnam; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues; D014874:Water Pollutants, Chemical