State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco- Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Environ Monit Assess. 2011 Jun;177(1-4):467-80. doi: 10.1007/s10661-010-1648-4. Epub 2010 Aug 17.
Surface water, suspended particulate matter, pore water, and sediment samples were collected and analyzed for polycyclic aromatic hydrocarbons (PAHs) in Yongding New River, South Drainage Canal and North Drainage Canal, which receive most of wastewater from industrial city of Tianjin. PAH concentrations in effluent samples of wastewater treatment plants (WTP) discharging into the South Drainage Canal and North Drainage Canal were quantified for the first time. The results showed that the discharge of the WTPs recently only contributed to the PAH contamination in the canals near the outlets of the WTPs. PAH levels in sediments of the streams were greatly higher than those in soils by riverbank probably due to receiving large amounts of untreated wastewater. Unusually high benz[a] anthracene concentration strongly influenced the seasonal and spatial variation of total PAH concentrations in South Drainage Canal. Paired samples t test of ∑Nap, Fl, Phe, Fluo and ∑Nap, Phe, Fluo, Chry concentrations, which were dominant components in the air samples from non-heating and heating season, respectively, in the suspended particulate matters from the streams showed that PAH source from air deposition was more important for Yongding New River than that for South Drainage Canal and North Drainage Canal. Source apportionment based on PAH profiles indicated that coal combustion was the major PAH contamination source, and coke oven sources and wood combustion also contributed to the PAH contamination of the streams. This was further indicated by organic petrography analysis.
地表水、悬浮颗粒物、孔隙水和沉积物样本被采集并分析了多环芳烃 (PAHs) 在永定新河、南运河和北运河，这些运河接收了来自天津工业城市的大部分废水。首次对排入南运河和北运河的污水处理厂 (WTP) 废水出口的 WTP 废水进行了 PAH 浓度定量分析。结果表明，最近 WTP 的排放仅导致了 WTP 出口附近运河中的 PAH 污染。由于接收了大量未经处理的废水，河流岸边的溪流沉积物中的 PAH 水平远高于土壤中的 PAH 水平。异常高的苯并[a]蒽浓度强烈影响了南运河总 PAH 浓度的季节性和空间变化。来自非采暖季节和采暖季节的悬浮颗粒物中的空气样本中主要成分的∑Nap、Fl、Phe、Fluo 和 ∑Nap、Phe、Fluo、Chry 浓度的配对样本 t 检验表明，空气沉积对永定新河的 PAH 源比南运河和北运河更重要。基于 PAH 分布的源分配表明，煤炭燃烧是主要的 PAH 污染来源，焦炉源和木材燃烧也导致了溪流的 PAH 污染。这进一步通过有机岩相分析得到了证实。
