Document Detail

Acidity and conductivity of Pinus massoniana bark as indicators to atmospheric acid deposition in Guangdong, China.
MedLine Citation:
PMID:  17278747     Owner:  NLM     Status:  MEDLINE    
Barks of Pinus massonianm collected from two polluted sites, Qujiang and Xiqiaoshan, and from the relatively clean site Dinghushan were used to evaluate the pollution indication by the determination of their acidity and conductivity. The acidity of the inner and outer barks from the polluted sites was significantly higher than those from the clean site, suggesting that the acidity of the bark occurred in concurrent with the air pollution. The significant lower pH values of the outer bark than the inner bark collected from all sites indicated that the outer bark was more sensitive than the inner bark in response to acid pollution, implying that the outer bark is more preferable when used as indication of atmospheric acid pollution. The conductivities of the inner barks differed significantly among the three sites, with higher values at the clean site. However, the significant differences were not observed among these sites. Furthermore, the pH values for the inner and outer barks were not correlated with the conductivity, which did not coincide with some other studies.
Yuan-wen Kuang; Guo-yi Zhou; Da-zhi Wen; Shi-zhong Liu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental sciences (China)     Volume:  18     ISSN:  1001-0742     ISO Abbreviation:  J Environ Sci (China)     Publication Date:  2006  
Date Detail:
Created Date:  2007-02-06     Completed Date:  2007-03-20     Revised Date:  2008-02-08    
Medline Journal Info:
Nlm Unique ID:  100967627     Medline TA:  J Environ Sci (China)     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  916-20     Citation Subset:  IM    
Institute of Ecology, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
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MeSH Terms
Air Pollutants*
Hydrogen-Ion Concentration*
Pinus / chemistry*
Plant Bark / chemistry*
Reg. No./Substance:
0/Air Pollutants

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

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