Document Detail


Desorption behaviors of BDE-28 and BDE-47 from natural soils with different organic carbon contents.
MedLine Citation:
PMID:  22266365     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Desorption kinetic and isothermal characteristics of BDE-28 and BDE-47 were investigated using natural soils with different organic carbon fractions. The results indicated that a two-compartment first-order model with dominant contribution of slow desorption could adequately describe the released kinetics of studied PBDEs. Desorption isotherms of different samples could be fitted well by linear distribution model or nonlinear Freundlich model. Moreover, most desorption procedures roughly exhibited hysteresis with respect to preceding sorption ones. At the statistically significant level of 0.05 or 0.1, total organic carbon content (f(OC)) exhibited significant correlations with the fitted parameters by the isothermal models. The correlations of f(OC) and SOM fractions (e.g., fulvic acid and humin) with the single point desorption coefficients at lower aqueous concentrations of studied PBDEs were significant; while at higher aqueous concentrations, the relationships were less significant or insignificant. Our findings may facilitate a comprehensive understanding on behaviors of PBDEs in soil systems.
Authors:
WenXin Liu; FangFang Cheng; WeiBo Li; BaoShan Xing; Shu Tao
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-01-20
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  163     ISSN:  1873-6424     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2012 Apr 
Date Detail:
Created Date:  2012-02-13     Completed Date:  2012-05-10     Revised Date:  2013-08-12    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  235-42     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China. wxliu@urban.pku.edu.cn
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MeSH Terms
Descriptor/Qualifier:
Adsorption
Carbon / chemistry*
Environmental Remediation
Kinetics
Models, Chemical
Polybrominated Biphenyls / analysis,  chemistry*
Soil / chemistry*
Soil Pollutants / analysis,  chemistry*
Chemical
Reg. No./Substance:
0/Polybrominated Biphenyls; 0/Soil; 0/Soil Pollutants; 0/tribromodiphenyl ether 28; 0N97R5X10X/2,2',4,4'-tetrabromodiphenyl ether; 7440-44-0/Carbon

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


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