Assessment of heavy metal contamination and ecological risk of core sediments in a coastal wetland of India

Author(s):  
Nimmi N ◽  
Shiji M ◽  
Harikumar P S
Author(s):  
Sangeetha Annam ◽  
Anshu Singla

Abstract: Soil is a major and important natural resource, which not only supports human life but also furnish commodities for ecological and economic growth. Ecological risk has posed a serious threat to the ecosystem by the degradation of soil. The high-stress level of heavy metals like chromium, copper, cadmium, etc. produce ecological risks which include: decrease in the fertility of the soil; reduction in crop yield & degradation of metabolism of living beings, and hence ecological health. The ecological risk associated, demands the assessment of heavy metal stress levels in soils. As the rate of stress level of heavy metals is exponentially increasing in recent times, it is apparent to assess or predict heavy metal contamination in soil. The assessment will help the concerned authorities to take corrective as well as preventive measures to enhance the ecological and hence economic growth. This study reviews the efficient assessment models to predict soil heavy metal contamination.


2019 ◽  
Vol 102 ◽  
pp. 246-251 ◽  
Author(s):  
Yan Feng ◽  
Qian Bao ◽  
Chen Yunpeng ◽  
Zhao Lizi ◽  
Xiao Xiao

Author(s):  
Song Cui ◽  
Shang Gao ◽  
Fuxiang Zhang ◽  
Qiang Fu ◽  
Min Wang ◽  
...  

Author(s):  
Boban Mugoša ◽  
Dijana Đurović ◽  
Mirjana Nedović-Vuković ◽  
Snežana Barjaktarović-Labović ◽  
Miroslav Vrvić

2014 ◽  
Vol 651-653 ◽  
pp. 1402-1409
Author(s):  
Gui Ping Xu ◽  
Xiao Fei Wang ◽  
Li Jun Chen

Concentrations of heavy metals in sugarcane soil of Guangxi were determined and the potential ecological risk index was used simultaneously to evaluate the extent of heavy metals enrichment contamination. Results showed that the pollution extent of heavy metals in sugarcane soil by potential ecological risk followed the order: Cd>Pb>Cu>Zn, Cu and Zn were slightly polluted, with small potential ecological harm, while Pb and Cd were above moderately polluted, with heavy potential ecological harm. Principal component analysis was applied to estimate the sources of heavy metals contamination, the results indicated that the first two components accounted for 61.016% and 26.920% of the total variance respectively, 4 kinds of heavy metal elements had similar sources, tailing dam lead-zinc concentrator upstream along the coast was the main sources of heavy metal contamination.


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