Abstract
Based on field data of polycyclic aromatic hydrocarbons (PAHs) in water and sediment in Nansi Lake. The concentrations and the partitioning characteristic of PAHs in the water and sediment were studied. The lgKd of high molecular weight PAHs were higher than the low molecular weight PAHs. The most of PAHs Kd values were negligible correlated with TOC, soluble salt, clay and pH of the sediment in Nansi Lake.
Highlights
Polycyclic aromatic hydrocarbons (PAHs), containing two or more benzene rings, are widely distributed in the environment, for heir hydrophobicity, strong persistence and long-range transportation potential [1]
The concentrations of total PAHs ranged from 27.52 ng/L to 55.06 ng/L in water, with the average value of 34.38±10.34 ng/L
The concentrations of total PAHs ranged from 80.3 ng/g dw to 639.47 ng/g dw in sediment, with the average value of 225.18±206 ng/g dw
Summary
Polycyclic aromatic hydrocarbons (PAHs), containing two or more benzene rings, are widely distributed in the environment, for heir hydrophobicity, strong persistence and long-range transportation potential [1]. PAHs usually exist in the form of free, DOM binding, SPM binding and sediment combination in the aquatic environment. Investigation of the distribution of PAHs in an aquatic environment is great significance for strategy designing of pollution control. The distribution of PAHs was mainly influenced by the characters of sediment (organic carbon content, particle composition) and environmental conditions (pH value, soluble salt content and so on), besides the physicochemical characters of PAHs and environmental conditions (temperature, precipitation) [2].
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