摘要
本文用批量平衡法研究一系列芳香族酮类化合物在东北黑土中的吸附,采用Fre-nundlich吸附等温方程求得土壤吸附常数(k_f).研究表明:12种芳香族酮类化合物的吸附等温线有线性和非线性两种形式.对化合物的土壤有机碳吸附常数(lgK_∝)进行定量结构-性质(QSPR)分析,发现芳香族酮类化合物的土壤有机碳吸附常数与正辛醇/水分配系数相关不显著,土壤有机碳吸附常数与分子极化率(α)有较好的相关性.这与芳香族酮类化合物的极性有关.
The sorption of 12 substituted aromatic ketone compounds by black soil from northeastern China was studied using batch equilibrium method. The data were fitted to the Frenundlich equation with the regression analysis. The results showed that the sorption behaviors of 12 substituted aromatic ketone compounds could be characterized by linear and non-linear isotherms suggesting different sorption mechanisms. A QSPR equation was established and indicated that molecular polarity was an potential factor affecting the organic carbon sorption coefficients of these 12 substituted aromatic ketones in soils.
出处
《环境化学》
CAS
CSCD
北大核心
2000年第4期330-334,共5页
Environmental Chemistry
基金
国家自然科学基金资助项目:批准号:29837180
关键词
芳香族酮
土壤吸附
土壤监测
平衡法
有机碳
aromatic ketone, soil sorption, QSPR, quantum-chemical descriptors.
