TY - JOUR
T1 - Sorption of polycyclic aromatic hydrocarbons (PAHs) to carbonaceous materials in a river floodplain soil
AU - Yang, Yi
AU - Hofmann, Thilo
AU - Pies, Carmen
AU - Grathwohl, Peter
PY - 2008/12
Y1 - 2008/12
N2 - We report on sorption isotherm of phenanthrene (Phe) for river floodplain soil associated with carbonaceous materials, with particular attention being devoted to the natural loading of Phe. Our sorption experiments with original soil samples, size, and density sub-fractions showed that the light fraction had the highest sorption capacity comparable to low rank coals. In addition, the light fraction contributed most for the sorption of Phe in total soil samples. Koc values for all fractions were in the same range, thus indicating that coal and coal-derived particles in all samples are responsible for the enhanced sorption for Phe. Sorption was strongly nonlinear and the combined partitioning and pore-filling model gave a better fit than the Freundlich sorption model. In addition, the spiked PAHs did not show the same behavior as the naturally aged ones, therefore the accessibility of indigenous background organic contaminants was reduced when coal and coal-derived particles are associated with the soils.
AB - We report on sorption isotherm of phenanthrene (Phe) for river floodplain soil associated with carbonaceous materials, with particular attention being devoted to the natural loading of Phe. Our sorption experiments with original soil samples, size, and density sub-fractions showed that the light fraction had the highest sorption capacity comparable to low rank coals. In addition, the light fraction contributed most for the sorption of Phe in total soil samples. Koc values for all fractions were in the same range, thus indicating that coal and coal-derived particles in all samples are responsible for the enhanced sorption for Phe. Sorption was strongly nonlinear and the combined partitioning and pore-filling model gave a better fit than the Freundlich sorption model. In addition, the spiked PAHs did not show the same behavior as the naturally aged ones, therefore the accessibility of indigenous background organic contaminants was reduced when coal and coal-derived particles are associated with the soils.
KW - Coal and coal-derived particles
KW - PAHs
KW - Pore filling
KW - Sorption
UR - https://www.scopus.com/pages/publications/47949116430
U2 - 10.1016/j.envpol.2008.02.024
DO - 10.1016/j.envpol.2008.02.024
M3 - 文章
C2 - 18406026
AN - SCOPUS:47949116430
SN - 0269-7491
VL - 156
SP - 1357
EP - 1363
JO - Environmental Pollution
JF - Environmental Pollution
IS - 3
ER -