Document Detail


Ageing behavior of phenanthrene and pyrene in soils: a study using sodium dodecylbenzenesulfonate extraction.
MedLine Citation:
PMID:  20800355     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The surfactant SDBS has potential to be used as an extractant in advanced extraction methods. It was investigated if SDBS in concentrations of 10,000 mg L(-1) can be used to study the ageing behaviors of phenanthrene and pyrene in two soils. Compared to dichloromethane extraction, extraction with 10,000 mg L(-1) SDBS can improve the precision of the determination due to the low volatility of surfactant solution. In all cases tested, the amount of sorbed phenanthrene and pyrene in soils increased with contact time from 1 to 120 days, and can be applied well to both the three-domain model and the dual mode model. Redundancy analysis showed that time, organic carbon content and logK(ow) are major factors affecting the fitted Freundlich parameters and the sorption kinetics of phenanthrene and pyrene. The amount of sorbed phenanthrene and pyrene in low-concentrations samples varied more with time than the one in high concentrations, indicating that the sorption on soils is concentration-dependent. Also, the isotherms were operationally separated into a "fast" fraction and a "slow" fraction. The results imply that the adsorption sites are internal to the SOM matrix and unevenly distributed.
Authors:
Qing Zhao; Lukas Weise; Peijun Li; Kun Yang; Yinqiu Zhang; Dianbo Dong; Peng Li; Xiaojun Li
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-08-06
Journal Detail:
Title:  Journal of hazardous materials     Volume:  183     ISSN:  1873-3336     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-09-13     Completed Date:  2010-12-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  881-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Affiliation:
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Benzenesulfonates / chemistry*
Kinetics
Phenanthrenes / analysis*
Pyrenes / analysis*
Soil / analysis,  chemistry*
Soil Pollutants / analysis
Surface-Active Agents
Time Factors
Chemical
Reg. No./Substance:
0/Benzenesulfonates; 0/Phenanthrenes; 0/Pyrenes; 0/Soil; 0/Soil Pollutants; 0/Surface-Active Agents; 27176-87-0/dodecylbenzenesulfonic acid; 85-01-8/phenanthrene

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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