Identification of carbonaceous geosorbents for PAHs by organic petrography in river floodplain soils

被引：47

作者：

Yang, Yi ^{[1
]}

Ligouis, Bertrand ^{[2
]}

Pies, Carmen ^{[3
]}

Achten, Christine ^{[1
]}

Hofmann, Thilo ^{[1
]}

机构：

[1] Univ Vienna, Dept Environm Geosci, A-1010 Vienna, Austria

[2] LAOP, D-72076 Tubingen, Germany

[3] Johannes Gutenberg Univ Mainz, D-6500 Mainz, Germany

来源：

CHEMOSPHERE | 2008年 / 71卷 / 11期

关键词：

PAHs; coal particles; light fraction; black carbon; organic petrography;

D O I：

10.1016/j.chemosphere.2008.01.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Organic petrographic analysis was applied to provide direct information on carbonaceous geosorbents for PAHs in river floodplain soils. The anthropogenic OM group (primarily coal and coal-derived particles) displayed large volume amounts for all the soil samples. Distinct PAH concentrations with similar PAH distribution patterns were determined in grain size and density fractions for each sample. Two-ring PAHs had stronger correlation to organic carbon (OC) than black carbon (BC) contents, while heavier PAHs showed correlation to BC, rather than OC. In this study, we combined grain size and density separation, PAH determinations, TOC and BC measurements, and organic petrographic identification, and concluded that two-ring PAHs in soils were associated to coal particles. Other heavier PAHs could be more controlled by black carbon (BC), which were mostly coal-derived particles from former coal mining and coal industrial activity. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2158 / 2167

页数：10

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