Department of Environmental Science, Kuwait Institute for Scientific Research, PO Box 24885, Safat 13109, Kuwait.
Environ Pollut. 2011 Dec;159(12):3666-72. doi: 10.1016/j.envpol.2011.07.021. Epub 2011 Aug 26.
This study reports concentrations of PBDEs in surface soil samples collected along a 140 km transect across Kuwait to assess the role of urban centers as sources of persistent organic pollutants to the surrounding environment. The ΣPBDE concentrations varied by a factor of ~250 and ranged from 289 to 80,078 pgg (-1)d.w. The concentrations of PBDEs in Kuwait City were significantly higher (p<0.01) than those collected from sites outside the city supporting the hypothesis that urban centers are sources of PBDEs. The congener profiles were dominated by BDE-209, accounting for 93% of the PBDEs in the soil samples. The concentrations of all congeners (except BDE-209) were highly correlated with percent organic carbon (%OC) (p>0.05) when the data from Kuwait City was omitted from the analysis. These findings suggest that soil concentrations outside the urban centers were close to equilibrium with the atmosphere.
本研究报告了在科威特 140 公里横截线上采集的表层土壤样本中多溴二苯醚（PBDEs）的浓度，以评估城市中心作为持久性有机污染物向周围环境释放的源的作用。ΣPBDE 浓度变化幅度高达 250 倍，范围为 289 至 80,078 pg/g（干重）。科威特市的 PBDE 浓度明显高于（p<0.01）城市以外地区采集的样本，这支持了城市中心是 PBDEs 来源的假设。同系物分布以 BDE-209 为主，占土壤样本中 PBDEs 的 93%。当分析中排除科威特市的数据时，所有同系物（除 BDE-209 外）的浓度与有机碳百分比（%OC）高度相关（p>0.05）。这些发现表明，城市中心以外地区的土壤浓度与大气接近平衡。
