Sorption of polycyclic aromatic hydrocarbons on particulate organic matters

被引：55
|
作者：
Guo, Xueyan [1 ,2 ]
Luo, Lei [1 ]
Ma, Yibing [2 ]
Zhang, Shuzhen [1 ]
机构：
[1] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China
[2] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr, Key Lab Plant Nutr & Nutrient Cycling, Beijing 100081, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 173卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
Sorption; Desorption; Particulate organic matter; Polycyclic aromatic hydrocarbons; DISTRIBUTED REACTIVITY MODEL; SOIL HUMIC ACIDS; PHENANTHRENE SORPTION; SIZE FRACTIONS; CONTAMINANTS; SEDIMENTS; COEFFICIENTS; SUBSTANCES; DESORPTION; ENRICHMENT;
D O I：
10.1016/j.jhazmat.2009.08.065
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Particulate organic matter (POM) is a key organic matter fraction which can influence soil fertility. Its interactions with hydrophobic organic pollutants (HOCs) have not been characterized and the mechanisms of retention of HOCs by POM remain unclear. In the present study, sorption behaviors of polycyclic aromatic hydrocarbons (PAHs) naphthalene (NAP), phenanthrene (PHE), and pyrene (PYR) by POW separated from different soils were examined and the POMs were characterized by elemental analysis, solid state C-13 NMR, and Fourier transform infrared spectroscopy (FT-IR). The results indicated that POMs were mainly composed of aliphatic components with high polarity. The different original POMs showed similar chemical composition and configuration. Sorption behaviors of PAHs indicated that there was no significant difference in sorption capacity among the POMs. Sorption of NAP and PHE by POMs displayed a nonlinear isotherm, while sorption of PYR yielded a linear isotherm. No significant hysteresis and ionic strength effect were observed for PAH desorption from the POMs. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：130 / 136
页数：7
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