Sorption of Selected Organic Compounds in Two Black Carbon Particles
Black carbons (BCs) have been reported to exhibit an extremely strong sorption of organic compounds in the environment. The basic physicochemical properties of two selected black carbons characterized and showed mainly non-polar. The polarity of BC1 was slightly higher than BC2. Sorption coefficients of selected organic compounds on two BCs were investigated by a reversedphase liquid chromatography (RP-LC) method. Sorption coefficients of organic chemicals on BCl were larger than those on BC2 because BCI had more surface area. Normalized surface area sorption coefficients of BC2 were larger than those of BCl, indicating that not only surface area but surface heterogeneity is also responsible for the resulting sorption capacity. By the regression of the sorption coefficients of organic compounds on these black carbons with the properties of organic compounds, two linear solvation energy relationship (LSER) equations were obtained. The main interactions involved in the adsorption process are generally London dispersion forces and π- and n- pair electron interactions. These LSERs can facilitate to predict the adsorption coefficients and evaluate the sorption mechanism of organic contaminants on black carbons through the molecular properties of sorbates and sorbents.
Black carbon Organic contaminants Sorption coefficient Linear solvation energy relationship
Yang-hsin Shih Po-Hsin Su
Department of Soil and Environmental Sciences and Center of Nanoscience and Nanotechnology,National Kaohsiung District Agricultural Research and Extension Station,Council of Agriculture,Executive Yuan
国际会议
杭州
英文
258-261
2009-10-10（万方平台首次上网日期，不代表论文的发表时间）