Ali Usman, Mahmood Adeel, Syed Jabir Hussain, Li Jun, Zhang Gan, Katsoyiannis Athanasios, Jones Kevin C, Malik Riffat Naseem
Environmental Biology and Ecotoxicology Laboratory, Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan.
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
Environ Pollut. 2015 Jun;201:131-40. doi: 10.1016/j.envpol.2015.02.035. Epub 2015 Mar 17.
Levels of polybrominated diphenyl ethers (PBDEs) and dechlorane plus (DPs) were investigated in the Indus River Basin from Pakistan. Concentrations of ∑PBDEs and ∑DPs were ranged between 0.05 and 2.38 and 0.002-0.53 ng g(-1) in the surface soils while 1.43-22.1 and 0.19-7.59 pg m(-3) in the passive air samples, respectively. Black carbon (fBC) and total organic carbon (fTOC) fractions were also measured and ranged between 0.73 and 1.75 and 0.04-0.2%, respectively. The statistical analysis revealed strong influence of fBC than fTOC on the distribution of PBDEs and DPs in the Indus River Basin soils. BDE's congener profile suggested the input of penta-bromodiphenylether (DE-71) commercial formulation in the study area. Soil-air partitioning of PBDEs were investigated by employing octanol-air partition coefficients (KOA) and black carbon-air partition coefficients (KBC-A). The results of both models suggested the combined influence of total organic carbon (absorption) and black carbon (adsorption) in the studied area.
对来自巴基斯坦印度河流域的多溴二苯醚（PBDEs）和十氯酮（DPs）水平进行了调查。表层土壤中∑PBDEs和∑DPs的浓度分别在0.05至2.38 ng g⁻¹和0.002 - 0.53 ng g⁻¹之间，而被动空气样本中的浓度分别为1.43至22.1 pg m⁻³和0.19至7.59 pg m⁻³。还测量了黑碳（fBC）和总有机碳（fTOC）的含量，分别在0.73至1.75和0.04 - 0.2%之间。统计分析表明，在印度河流域土壤中，fBC对PBDEs和DPs分布的影响比fTOC更强。BDE同族体分布表明研究区域有五溴二苯醚（DE - 71）商业配方的输入。通过采用正辛醇 - 空气分配系数（KOA）和黑碳 - 空气分配系数（KBC - A）研究了PBDEs的土壤 - 空气分配情况。两种模型的结果均表明，在研究区域总有机碳（吸收）和黑碳（吸附）存在综合影响。
