Ma Jing, Cheng Jinping, Xie Haiyun, Hu Xiaofang, Li Wei, Zhang Jin, Yuan Tao, Wang Wenhua
School of Environmental Science and Engineering, Shanghai Jiaotong University, 800 Dongchuan Road, Shanghai, 200240, China.
Environ Geochem Health. 2007 Dec;29(6):503-11. doi: 10.1007/s10653-007-9119-8. Epub 2007 Sep 5.
As one of China's great metropolises, Shanghai is suffering from the impact of manufacture and the use of chemical industrial products, and it faces serious pollution from polychlorinated biphenyls (PCBs). Therefore, in this study, in order to assess the seasonal and spatial character of contamination from chemical industrial zones, the concentrations of PCBs have been measured in various environmental media, including soil, leaves, and atmospheric particulate samples collected in a chemical industrial zone of Shanghai and compared with samples from presumably unpolluted sites of rural areas. In soils, the PCB concentrations ranged from 0.5 ng g(-1) (unpolluted site) to 586.85 ng g(-1) (chlor-alkali industry site). The concentrations of PCBs in evergreen leaves ranged from 0.3 ng g(-1) to 32.46 ng g(-1), and more chlorinated biphenyls congeners, such as penta-biphenyls and hexa-biphenyls, were the dominant contributors in winter and spring. Seasonal differences and the constitution patterns of congeners might be affected by the temperature and industrial activities. The PCB concentrations in the leaves of deciduous trees increase over time as the leaves grow. The PCB concentration in atmospheric particulates was in the range of 9.22-14.15 x 10(3)pg m(-3), which might be the result of influence from climate and industrial activities. The relativity of PCB contents among the environmental media was discussed. The results in this paper provide an important profile of the current contamination status of a key chemical industrial zone in China.
作为中国的大都市之一，上海正遭受化工产品生产和使用的影响，面临着多氯联苯（PCBs）的严重污染。因此，在本研究中，为了评估化工园区污染的季节和空间特征，对上海某化工园区采集的土壤、树叶和大气颗粒物等各种环境介质中的多氯联苯浓度进行了测量，并与农村地区可能未受污染地点的样本进行了比较。在土壤中，多氯联苯浓度范围为0从0.5 ng g(-1)（未污染地点）至586.85 ng g(-1)（氯碱工业场地）。常绿树叶中的多氯联苯浓度范围为0.3 ng g(-1)至32.46 ng g(-1)，更多的氯代联苯同系物，如五氯联苯和六氯联苯，在冬季和春季是主要贡献者。季节差异和同系物的组成模式可能受温度和工业活动的影响。落叶树树叶中的多氯联苯浓度随着树叶生长而随时间增加。大气颗粒物中的多氯联苯浓度在9.22 - 14.15 x 10(3)pg m(-3)范围内，这可能是气候和工业活动影响的结果。讨论了环境介质中多氯联苯含量的相关性。本文结果提供了中国一个关键化工园区当前污染状况的重要概况。
