Liu Benhua, Chen Liang, Huang Linxian, Wang Yongseng, Li Yuehua
School of Resources and Environment, University of Jinan, Shandong 250022, China; Shandong Provincial Engineering Technology Research Center for Groundwater Numerical Simulation and Contamination Control, Shandong 250022, China.
State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China and School of Civil Engineering, Tianjin University, Tianjin 300072, China E-mail:
Water Sci Technol. 2015;71(2):259-67. doi: 10.2166/wst.2014.499.
This paper focuses on the distribution of volatile organic compounds (VOCs) in the surface water, soil, and groundwater within a chemical industry park in Eastern China. At least one VOC was detected in each of the 20 sampling sites, and the maximum number of VOCs detected in the surface water, groundwater, and soil were 13, 16, and 14, respectively. Two of the 10 VOCs with elevated concentrations detected in surface water, groundwater, and soil were chloroform and 1,2-dichloroethane. The characteristics of VOCs, which include volatility, boiling point, and solubility, could significantly affect their distribution in surface water, soil, and groundwater. However, due to the direct discharging of chemical industry wastewater into surface water, higher concentrations of VOCs (except chloroform) were detected in surface water than in soil and groundwater. Fortunately, the higher volatility of VOCs prevents the VOCs from impacting groundwater, which helps to maintain a lower concentration of VOCs in the groundwater than in both surface water and soil. This is because pollutants with relatively higher boiling points and lower solubilities have higher detection frequencies in soil, and contaminants with relatively lower boiling points and higher solubilities have higher detection frequencies in water, notably in surface water.
本文聚焦于中国东部某化工园区地表水、土壤及地下水中挥发性有机化合物（VOCs）的分布情况。在20个采样点中，每个采样点均至少检测出一种VOC，地表水、地下水及土壤中检测出的VOC最大数量分别为13种、16种和14种。在地表水、地下水及土壤中检测出的10种浓度升高的VOC中，有两种是氯仿和1,2 - 二氯乙烷。VOC的特性，包括挥发性、沸点和溶解度，会显著影响其在地表水、土壤及地下水中的分布。然而，由于化工废水直接排放到地表水，地表水中检测出的VOC浓度（氯仿除外）高于土壤和地下水。幸运的是，VOC的高挥发性使其不会影响地下水，这有助于保持地下水中VOC的浓度低于地表水和土壤中的浓度。这是因为沸点相对较高且溶解度较低的污染物在土壤中的检测频率较高，而沸点相对较低且溶解度较高的污染物在水中，尤其是地表水中的检测频率较高。
