Pan Bo, Liu Wen-xin, Lin Xiu-mei, Yuan Hui-shi, Tao Shu
Laboratory for Earth Surface Processes, College of Environmental Sciences, Peking University, Beijing 100871, China.
Huan Jing Ke Xue. 2005 May;26(3):162-6.
Organic carbon normalized sorption coefficient of phenanthrene in soils was determined in a batch experiment. The influence of the presence of dissolved organic carbon (DOC) on sorption coefficient was also investigated. The results demonstrated that, the DOC dissolved from the soil would enhance the water solubility of phenanthrene and change the sorption behavior of phenanthrene between soil and water, consequently leading to an underestimation of sorption coefficient. When the binding coefficient of DOC and phenanthrene (K(doc)) from the literatures was adopted for correction of measured data, a better estimation of sorption coefficient could be achieved. In this study, lgK(oc) and lgK(Foc) were 4.35 and 7.01, respectively. Comparison between the uncorrected/corrected lgK(oc) and the literature data could partially reflect the deviation caused by the influence from various concentrations of DOC may occur in many sorption studies in water-soil system. It was significant to compare the sorption coefficient derived from different studies considering this influence.
通过批量实验测定了土壤中菲的有机碳归一化吸附系数。同时研究了溶解有机碳（DOC）的存在对吸附系数的影响。结果表明，从土壤中溶解出的DOC会提高菲的水溶性，并改变菲在土壤和水之间的吸附行为，从而导致吸附系数被低估。当采用文献中DOC与菲的结合系数（K(doc)）对测量数据进行校正时，可以更好地估算吸附系数。在本研究中，lgK(oc)和lgK(Foc)分别为4.35和7.01。未校正/校正后的lgK(oc)与文献数据之间的比较可以部分反映在水土系统的许多吸附研究中，不同浓度的DOC影响所导致的偏差。考虑到这种影响，比较不同研究得出的吸附系数具有重要意义。
