van Noort Paul C M
Deltares, P.O. Box 85467, 3508 AL Utrecht, The Netherlands.
Chemosphere. 2009 Feb;74(8):1018-23. doi: 10.1016/j.chemosphere.2008.11.001. Epub 2008 Dec 16.
The aim of this work was to derive a relation between the number of specific carbon atoms in alkylbenzenes and PAHs and the average logK(oc) for linear partitioning between amorphous organic carbon in soils and sediments and water. The relation between the number of specific carbon atoms and n-octanol/water partitioning and subcooled aqueous solubility was sought first, as the number of data for partitioning into amorphous organic carbon was relatively sparse. It turned out that linear partitioning into amorphous organic carbon could be described by a linear relation based on the number of aromatic carbons, the number of alkyl carbons and the number of alicyclic carbons in the same way as for n-octanol/water partitioning and subcooled liquid aqueous solubility. From the linear regressions for linear partitioning into the various amorphous organic carbons, an average intercept for the linear partitioning regression equation was derived to represent average organic carbon in soils and sediments.
这项工作的目的是推导烷基苯和多环芳烃中特定碳原子数与土壤和沉积物中无定形有机碳与水之间线性分配的平均logK(oc)之间的关系。由于分配到无定形有机碳中的数据相对较少，首先研究了特定碳原子数与正辛醇/水分配以及过冷水溶解度之间的关系。结果表明，与正辛醇/水分配和过冷液体水溶解度一样，无定形有机碳中的线性分配可以通过基于芳香碳数、烷基碳数和脂环族碳数的线性关系来描述。通过对各种无定形有机碳线性分配的线性回归，推导出线性分配回归方程的平均截距，以代表土壤和沉积物中的平均有机碳。
