Aqueous accelerated solvent extraction of native polycyclic aromatic hydrocarbons (PAHs) from carbonaceous river floodplain soils

被引：11
|
作者：
Yang, Yi [1 ,2 ]
Hofmann, Thilo [2 ]
机构：
[1] E China Normal Univ, Sch Resource & Environm Sci, Shanghai 200062, Peoples R China
[2] Univ Vienna, Dept Environm Geosci, A-1010 Vienna, Austria
来源：
ENVIRONMENTAL POLLUTION | 2009年 / 157卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Native PAHs; Desorption enthalpy; ASE; Coal; Soil; HYDROPHOBIC ORGANIC CONTAMINANTS; DISTRIBUTED REACTIVITY MODEL; FACILITATED TRANSPORT; SORPTION; COAL; SEDIMENTS; DESORPTION; MATTER; TEMPERATURE; PARTICLES;
D O I：
10.1016/j.envpol.2009.05.020
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, three river floodplain soils with different compositions of carbonaceous materials and a reference coal sample were extracted with water using the accelerated solvent extraction (ASE) method. The desorption enthalpy values for 2-ring PAHs were highest in the coal sample, with values in the soil samples decreasing with decrease in coal content. The values for the higher condensed PAHs showed that the highest desorption enthalpies were from the samples with the largest amount of coal-derived particles. Elevated desorption enthalpies indicated a strong bonding between PAHs and geosorbents. Moreover, with the application of ASE this study was able to conclude that the PAHs in the samples were preferentially adsorbed to carbonaceous materials with high surface areas. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2604 / 2609
页数：6
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