NDLI: The role of dissolved organic matter in sorption process of polycyclic aromatic hydrocarbons on soils and sediments

Content Provider	IEEE Xplore Digital Library
Author	Yanmei Zhou Qiong Zhang Zhaoyi Xu Hongxiao Tang
Copyright Year	2010
Description	Author affiliation: School of Civil Engineering and Architecture, Beijing Jiaotong University, 100044, China (Yanmei Zhou; Qiong Zhang; Zhaoyi Xu) \|\| State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese, Academy of Sciences, P.O.Box 2871, Beijing, 100085, China (Hongxiao Tang)
Abstract	The sorption behavior was determined for three model polycyclic aromatic hydrocarbons (PAHs), i.e., naphthalene (NAP), phenanthrene (PHN) and pyrene (PYR), from water to six soil and sediment samples. The humic substances dissociating from soils and sediments were characterized by liquid-state $^{1}H$ NMR. The experiments show that the sorption of PAHs on soils and sediments is bimodal. In initial stage, the properties of dissolved humics are more important for as compared with solid particles. The soils or sediments present larger DOC content produce the stronger sorption capacities for three PAH molecules except for sediment III. The relatively lower Kf' values for sediment III possibly result from its less hydrophobic index of dissolved organic matter. With the increase of contacting time, the physicochemical properties of soils or sediment play more significent role. The larger SSA and smaller particle size produce stronger sorption capacities. These findings suggest that the dissolved organic matter is a nonnegligible consideration in studying PAH sorption process and only taking into account the solid humic characteristics cannot fully understand the whole sorption mechanism.
Starting Page	1922
Ending Page	1927
File Size	306806
Page Count	6
File Format	PDF
ISBN	9781424477371
e-ISBN	9781424477395
DOI	10.1109/MACE.2010.5536511
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-26
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Dissolved humic substances Sorption behavior Hydrocarbons Electronic mail Solid state circuits Minerals Sediments Chemistry $^{1}H$ NMR Polycyclic aromatic hydrocarbons Soil Nuclear magnetic resonance Kinetic theory Civil engineering
Content Type	Text
Resource Type	Article

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