[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 7, Number 21 (Summer 2013) ::
IJT 2013, 7(21): 871-877 Back to browse issues page
Evaluation of Some Physiochemical Parameters and Heavy Metal Contamination in Hara Biosphere Reserve, Iran, Using a New Pollution Index Approach
Iman Zarei *, Alireza Pourkhabbaz, Hadi Babaei
Department of Environmental Sciences, University of Birjand, Birjand, Iran. , iman_zarei89@yahoo.com
Abstract:   (5630 Views)
Background: The pollution of the aquatic environment with heavy metals has become a worldwide problem during recent years, due to their potential toxic effects and ability to bio-accumulate in aquatic ecosystems. Heavy metals are sensitive indicators for monitoring changes in the aquatic environment.
Methods: In this study, total concentrations of Cr, Pb, Cu, Zn, and Fe were measured in water and sediments from nine sites, based on ecological conditions and human activities and the effects of sediment pH and sediment organic matter on bioavailability of selected metals were determined. Modified degree of contamination (mCd) was computed in order to determine anthropogenically derived sediment contamination.
 Results: Mean concentration of metals in water found to be in the following order: Pb > Fe > Zn > Cu > Cr, while in sediment samples it was Fe > Cr > Zn > Pb > Cu. The average content of examined metals in water was higher than the chronic values in marine surface water guideline values. Mean content of Cr, Pb and Fe in sediments were higher than average of the less contaminated sample but Cu and Zn were lower than this guideline value. In the study area, mCd values were less than 1.5 with values ranging from 0.71 to 1.02. Conclusion: The results of this study indicated with a decrease in organic matter and pH in sediments, the concentration of copper and iron increased. Base on modified contamination degree, the sediments of Hara Biosphere Reserve are considered to be in the zero to very low contamination status.
Keywords: Bio-Accumulate, Copper, Heavy Metals, Lead, Mcd, Water Pollution.
Full-Text [PDF 140 kb]   (1717 Downloads)    
Type of Study: Research | Subject: Special
Send email to the article author

Add your comments about this article
Your username or email:

Write the security code in the box >



XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Zarei I, Pourkhabbaz A, Babaei H. Evaluation of Some Physiochemical Parameters and Heavy Metal Contamination in Hara Biosphere Reserve, Iran, Using a New Pollution Index Approach. IJT. 2013; 7 (21) :871-877
URL: http://ijt.arakmu.ac.ir/article-1-218-en.html
Volume 7, Number 21 (Summer 2013) Back to browse issues page
مجله سم شناسی و مسمومیتهای ایران Iranian Journal of Toxicology
Persian site map - English site map - Created in 0.052 seconds with 794 queries by yektaweb 3506