Liu Ping, Zhu Dongqiang, Zhang Hua, Shi Xin, Sun Huiyu, Dang Fei
State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, 22 Hankou Road, Jiangsu 210093, PR China.
Environ Pollut. 2008 Dec;156(3):1053-60. doi: 10.1016/j.envpol.2008.04.020. Epub 2008 Jun 10.
Improved predictions on the fate of organic pollutants in surface environments require a better understanding of the underlying sorption mechanisms that control their uptake by soils. In this study, we monitored sorption of nine aromatic compounds with varying physicochemical properties (hydrophobicity, electron-donor/acceptor ability and polarity), including two polycyclic aromatic hydrocarbons, two chlorobenzenes, two nitroaromatic compounds, dichlobenil, carbaryl and 2,4-dichlorophenol in aqueous suspension of four surface soils of eastern China. The tested soils were characterized with respect to organic carbon (OC) content, black carbon content, mineralogy, morphology and size fraction to assess the role of the diverse soil characteristics in sorption. The results of this study show that not only the solute hydrophobicity and the OC content of soil are important to the retention of organic pollutants, but also the solute molecular structure and the soil nature.
要更好地预测地表环境中有机污染物的归宿，就需要更深入地了解控制土壤对其吸收的潜在吸附机制。在本研究中，我们监测了9种具有不同物理化学性质（疏水性、电子供体/受体能力和极性）的芳香族化合物在华东地区4种表层土壤水悬浮液中的吸附情况，这些化合物包括2种多环芳烃、2种氯苯、2种硝基芳烃、二氯苯腈、西维因和2,4-二氯苯酚。对测试土壤的有机碳（OC）含量、黑碳含量、矿物学、形态和粒径分级进行了表征，以评估不同土壤特性在吸附过程中的作用。本研究结果表明，不仅溶质疏水性和土壤有机碳含量对有机污染物的保留很重要，溶质分子结构和土壤性质也很重要。
