Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
Environ Monit Assess. 2013 Jan;185(1):945-53. doi: 10.1007/s10661-012-2605-1. Epub 2012 Mar 28.
Polycyclic aromatic hydrocarbons (PAHs) in 24 surface sediments from the Dahuofang Reservoir (DHF), the largest man-made lake in Northeast China, were measured. The results showed that the concentrations of 16 US EPA priority PAHs in the sediments ranged from 323 to 912 ng/g dry weight with a mean concentration of 592 ± 139 ng/g. The PAH source contributions were estimated based on positive matrix factorization model. The coal combustion contributed to 31 % of the measured PAHs, followed by residential emissions (22%), biomass burning (21%), and traffic-related emissions (10%). Pyrogenic sources contributed ~84% of anthropogenic PAHs to the sediments, indicating that energy consumption release was a predominant contribution of PAH pollution in DHF. Compared with the results from the urban atmospheric PAHs in the region, there was a low contribution from traffic-related emissions in the sediments possibly due to the low mobility of the traffic-related derived 5+6-ring PAHs and their rapid deposition close to the urban area.
从中国东北最大的人工湖——大伙房水库的 24 个表层沉积物中测定了多环芳烃 (PAHs)。结果表明，沉积物中 16 种美国环保署优先控制的 PAHs 的浓度范围为 323 至 912ng/g 干重，平均值为 592 ± 139ng/g。基于正定矩阵因子模型估算了 PAH 的来源贡献。煤燃烧对所测 PAHs 的贡献率为 31%，其次是居民排放 (22%)、生物质燃烧 (21%)和交通相关排放 (10%)。热成因源对沉积物中人为 PAHs 的贡献率约为 84%，表明能源消耗释放是大伙房水库 PAH 污染的主要贡献源。与该地区城市大气 PAHs 的结果相比，沉积物中交通相关排放的贡献较低，这可能是由于交通相关衍生的 5+6 环 PAHs 的迁移性较低，以及它们在靠近城市地区的快速沉积。
