Occurrence of coal and coal-derived particle-bound polycyclic aromatic hydrocarbons (PAHs) in a river floodplain soil.
A PAH contaminated river floodplain soil was separated according to grain size and density. Coal and coal-derived particles from coal mining, coal industry and coal transportation activities were identified by organic petrographic analysis in our samples. Distinct concentrations of PAHs were found in different grain size and density fractions, however, similar distribution patterns of PAHs indicated similar sources. In addition, although light fractions had the mass fraction by weight of less than 5%, they contributed almost 75% of the total PAHs in the soil. PAH concentrations of all sub fractions showed positive correlation with their TOC contents. Altogether, coal and coal-derived particles that were abundant in light fractions could be the dominant geosorbents for PAHs in our samples.
Yang
Yi
Y
Environmental Geosciences, Vienna University, Althanstrasse 14, 109 Vienna, Austria.
Ligouis
Bertrand
B
Pies
Carmen
C
Grathwohl
Peter
P
Hofmann
Thilo
T
D000327:Adsorption; D001673:Biodegradation, Environmental; D003031:Coal / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000032:analysis; D005858:Germany; D007220:Industrial Waste / Q000032:analysis*; D010316:Particle Size; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D045483:Rivers; D012989:Soil Pollutants / Q000032:analysis*
D003031:Coal; D007220:Industrial Waste; D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants