Ali Usman, Sánchez-García Laura, Rehman Muhammad Yasir Abdur, Syed Jabir Hussain, Mahmood Adeel, Li Jun, Zhang Gan, Jones Kevin C, Malik Riffat Naseem
Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.
Institute of Environmental Sciences of Aragon, Zaragoza University, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
Environ Pollut. 2016 Jan;208(Pt B):850-8. doi: 10.1016/j.envpol.2015.10.005. Epub 2015 Nov 21.
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.
本研究首次报道了对巴基斯坦印度河流域具有生态重要性地点的空气和土壤样本中多氯萘（PCNs）的调查。空气和土壤中∑39-PCNs的浓度范围分别为1-1588 pg m(-3)和0.02-23 ng g(-1)，而平均毒性当量（TEQ）值经计算分别为5.4E(-04) pg TEQ m(-3)和1.6E(+01) pg TEQ g(-1)。在空间上，拉希姆亚尔汗（农业区）的空气和土壤中PCN浓度较高。低-中氯代多氯萘（三氯萘、四氯萘和五氯萘之和）在空气和土壤中均占主导地位，分别占这两种环境基质中总PCNs的87%和86%。根据数据，印度河流域多氯萘的土壤-空气分配被解释为同样受黑碳和有机质综合作用的控制，而难降解有机形态没有优先影响。
