title: Tracking the fingerprints and combined TOC-black carbon mediated soil-air partitioning of polychlorinated naphthalenes (PCNs) in the Indus River Basin of Pakistan.
abstract: This study reports the first investigation of polychlorinated naphthalenes (PCNs) in air and soil samples from ecologically important sites of the Indus River Basin, Pakistan. The concentrations of ∑39-PCNs in air and soil were found in a range between 1-1588 pg m(-3) and 0.02-23 ng g(-1) while the mean TEQ values were calculated to be 5.4E(-04) pg TEQ m(-3) and 1.6E(+01) pg TEQ g(-1), respectively. Spatially, air and soil PCN concentrations were found to be high at Rahim Yar Khan (agricultural region). Lower-medium chlorinated PCNs (sum of tri-, tetra- and penta-CNs) predominated in both air and soil, altogether constituting 87 and 86% of total PCNs in the two environmental matrices, respectively. According to the data, soil-air partitioning of PCNs was interpreted to be similarly controlled by the combined effect of black carbon and organic matter in the Indus River Basin, with no preferential implication of the recalcitrant organic form.
authors.affiliation: Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.
authors.forename: Usman
authors.initials: U
authors.lastname: Ali
authors.affiliation: Institute of Environmental Sciences of Aragon, Zaragoza University, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
authors.forename: Laura
authors.initials: L
authors.lastname: Sánchez-García
authors.affiliation: Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.
authors.forename: Muhammad Yasir Abdur
authors.initials: MY
authors.lastname: Rehman
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors.forename: Jabir Hussain
authors.initials: JH
authors.lastname: Syed
authors.affiliation: Department of Biosciences, COMSATS Institute of Information Technology, Islamabad 45550, Pakistan.
authors.forename: Adeel
authors.initials: A
authors.lastname: Mahmood
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: Centre for Chemicals Management, 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, Quaid-i-Azam University, Islamabad 45320, Pakistan. Electronic address: r_n_malik2000@yahoo.co.uk.
authors.forename: Riffat Naseem
authors.initials: RN
authors.lastname: Malik
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D009281:Naphthalenes / Q000032:analysis*; D010154:Pakistan; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D053260:Soot / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D009281:Naphthalenes; D012987:Soil; D012989:Soil Pollutants; D053260:Soot
keywords: Black carbon–air partition coefficient; Octanol–air partition coefficient; PCNs; Soil–air partition model; Sorption