Document Detail


Phenolic acids as bioindicators of fly ash deposit revegetation.
MedLine Citation:
PMID:  16418890     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The floristic composition, the abundance, and the cover of pioneer plant species of spontaneously formed plant communities and the content of total phenolics and phenolic acids, as humus constituents, of an ash deposit after 7 years of recultivation were studied. The restoration of both the soil and the vegetation on the ash deposits of the "Nikola Tesla-A" thermoelectric power plant in Obrenovac (Serbia) is an extremely slow process. Unfavorable physical and chemical characteristics, the toxicity of fly ash, and extreme microclimatic conditions prevented the development of compact plant cover. The abundance and cover of plants increased from the central part of the deposit towards its edges (ranging from 1-80%). Festuca rubra L., Crepis setosa Hall., Erigeron canadensis L., Cirsium arvense (L.) Scop., Calamagrostis epigeios (L.) Roth., and Tamarix gallica L. were the most abundant species, thus giving the highest cover. Humus generated during the decomposition process of plant remains represents a completely new product absent in the ash as the starting material. The amount of total phenolics and phenolic acids (38.07-185.16 microg/g of total phenolics and 4.12-27.28 microg/g of phenolic acids) in fly ash increased from the center of the deposit towards its edges in correlation with the increase in plant abundance and cover. Ash samples contained high amounts of ferulic, vanillic, and p-coumaric acid, while the content of both p-hydroxybenzoic and syringic acid was relatively low. The presence of phenolic acids indicates the ongoing process of humus formation in the ash, in which the most abundant pioneer plants of spontaneously formed plant communities play the main role. Phenolic compounds can serve as reliable bioindicators in an assessment of the success of the recultivation process of thermoelectric power plants' ash deposits.
Authors:
L Djurdjević; M Mitrović; P Pavlović; G Gajić; O Kostić
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-01-13
Journal Detail:
Title:  Archives of environmental contamination and toxicology     Volume:  50     ISSN:  0090-4341     ISO Abbreviation:  Arch. Environ. Contam. Toxicol.     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-04-05     Completed Date:  2006-05-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0357245     Medline TA:  Arch Environ Contam Toxicol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  488-95     Citation Subset:  IM    
Affiliation:
Department of Ecology, Institute for Biological Research Sinisa Stanković, Bulevar Despota Stefana 142, Belgrade, Serbia and Montenegro. kalac@ibiss.bg.ac.yu
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MeSH Terms
Descriptor/Qualifier:
Carbon / analysis*
Environmental Monitoring*
Hydroxybenzoic Acids / analysis*
Particulate Matter
Plants / growth & development*
Soil / analysis*,  standards
Yugoslavia
Chemical
Reg. No./Substance:
0/Hydroxybenzoic Acids; 0/Particulate Matter; 0/Soil; 29656-58-4/phenolic acid; 68131-74-8/fly ash; 7440-44-0/Carbon

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


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