Distribution of polycyclic aromatic hydrocarbons in surface water and sediment near a drinking water reservoir in Northeastern China
Distribution of polycyclic aromatic hydrocarbons in surface water and sediment near a drinking water reservoir in Northeastern China
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DOI：
10.1007/s11356-012-1164-x
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发表时间：
2013-04
影响因子：
5.8
通讯作者：
Yu Liu;Ji-min Shen;Zhong-lin Chen;N. Ren;Yifan Li
中科院分区：
文献类型：
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作者：
Yu Liu;Ji-min Shen;Zhong-lin Chen;N. Ren;Yifan Li
对哈尔滨市饮用水水源地磨盘山水库附近水体和沉积物中多环芳烃（PAHs）的含量进行了测定。共有16个多环芳烃同时确定和量化的三个水体测试（拉林河，蟒牛河，磨盘山水库）和磨盘山饮用水处理厂在高，低水期间。水和沉积物样品中的总PAH浓度范围分别为122.7至639.8纳克/升和89.1至749.0纳克/克干重。两个样本也发现了类似的空间和时间趋势。磨盘山水库在丰水期出现最低的16-PAH浓度，拉林河在枯水期出现最高的16-PAH浓度。多环芳烃的分布与三个水体相似，低分子量多环芳烃的比例很高，以二至三环多环芳烃为主（78.4%至89.0%）。两个分子指标反映了可能的PAH来源，表明主要输入来自燃煤，特别是在枯水期。常规处理使磨盘山处理后的饮用水中不同环的多环芳烃减少了20.7%~ 67.0%。这些结果表明，人类活动对饮用水资源产生了负面影响。如果自来水厂没有明显的去除多环芳烃，饮用水对人们的健康构成一定的潜在风险。
The levels of polycyclic aromatic hydrocarbons (PAHs) in the water and the sediment samples collected near the Mopanshan Reservoir—the most important drinking water resource of Harbin City in Northeast China—were examined. A total of 16 PAHs were concurrently identified and quantified in the three water bodies tested (Lalin River, Mangniu River, and Mopanshan Reservoir) and in the Mopanshan drinking water treatment plant during the high- and low water periods. The total PAH concentrations in the water and sediment samples ranged from 122.7 to 639.8 ng/L and from 89.1 to 749.0 ng/g dry weight, respectively. Similar spatial and temporal trends were also found for both samples. The lowest Σ16PAH concentration of the Mopanshan Reservoir was obtained during the high water period; by contrast, the Lalin River had the highest concentration during the low water period. The PAH profiles resembling the three water bodies, with high percentages of low-molecular weight PAHs and dominated by two- to three-ring PAHs (78.4 to 89.0 %). Two of the molecular indices used reflected the possible PAH sources, indicating the main input from coal combustion, especially during the low water period. The conventional drinking water treatment operations resulted in a 20.7 to 67.0 % decrease in the different-ringed PAHs in the Mopanshan-treated drinking water. These findings indicate that human activities negatively affect the drinking water resource. Without the obvious removal of the PAHs in the waterworks, drinking water poses certain potential health risks to people.