title: Presence, deposition flux and mass burden of persistent organic pollutants (POPs) from Mehmood Booti Drain sediments, Lahore.
abstract: This study was conducted with the aim of analyzing persistent organic pollutants i.e., PCBs, PBDEs, DPs and OCPs for sediment samples collected from Mehmood Booti Drain, Lahore, Pakistan that receives higher pollution loads from adjacent waste dumping site. Levels of ∑PCBs, ∑PBDEs, ∑DPs and ∑OCPs ranged between 5.9-62, 0.36-1.32, n.d.-0.02 and 0.96-18.07ngg(-1,) respectively. These levels were found to be comparable with other studies of local or global origin. Composition, spatial distribution and source profile indicated that Mehmood Booti waste dumping site was the major input source for sedimentary POPs pollution. The highest POPs deposition flux and mass inventory was attributed to PCBs and OCPs. Deposition flux indicated the input of 6E(-04), 5E(-05), 9E(-07) and 4E(-0)(4)t/yr of PCBs, PBDEs, DPs and OCPs into the Mehmood Booti Drain sediments which ultimately discharge into the River Ravi. Mass inventories suggested 1E(-02), 3E(-04), 7E(-06) and 3E(-03) metric tons PCBs, PBDEs, DPs and OCPs burden, respectively in the Mehmood Booti Drain sediments.
authors.affiliation: Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, PO 45320, Islamabad, Pakistan.
authors.forename: Usman
authors.initials: U
authors.lastname: Ali
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Gan
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Department of Biosciences, COMSATS Institute of Information Technology, PO 45550, Islamabad, Pakistan.
authors.forename: Adeel
authors.initials: A
authors.lastname: Mahmood
authors.affiliation: Centre for Chemical Managements, Lancaster Environment Centre, Lancaster University, Bailrigg, Lancaster LA1 4YQ, UK.
authors.forename: Kevin C
authors.initials: KC
authors.lastname: Jones
authors.affiliation: Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, PO 45320, Islamabad, Pakistan. Electronic address: r_n_malik2000@yahoo.co.uk.
authors.forename: Riffat Naseem
authors.initials: RN
authors.lastname: Malik
mesh_terms: D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D055768:Halogenated Diphenyl Ethers / Q000032:analysis; D015386:Hazardous Substances / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000032:analysis; D009930:Organic Chemicals / Q000032:analysis*; D010154:Pakistan; D010575:Pesticides / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis; D064091:Waste Disposal Facilities; D014866:Waste Products / Q000009:adverse effects*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D055768:Halogenated Diphenyl Ethers; D015386:Hazardous Substances; D006843:Hydrocarbons, Chlorinated; D009930:Organic Chemicals; D010575:Pesticides; D014866:Waste Products; D014874:Water Pollutants, Chemical; D011078:Polychlorinated Biphenyls
keywords: DPs; Deposition flux; Mass inventory; PBDEs; PCBs; POPs: OCPs; Pakistan; Waste dumping site