Toxicity levels, Ecological risk assessment of Heavy metals and distribution in the surface sediment of Hub River, Hub River estuary and Gadani coast, Baluchistan, Pakistan
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2016, Vol 8, Issue 5
Abstract
Fourteen sediment samples were collected from three sites (Hub River, Hub River estuary and Gadani coast) for examining the concentrations and toxicity levels of heavy metals (Cadmium, Chromium, Copper Lead, Cadmium, Zinc, Manganese and Iron) and their concentrations. Furthermore, some factors and indexes, Contamination Factor, MERM-Q, Geo-accumulation Index, and Potential Ecological Risk Index were used for their environmental assessment and pollution status of surface sediments of the study area. The present data has also been compared with the sediment quality guideline. All the values of heavy metals of the study sites lie in the LEL (Lowest Effect Level) except for Cadmium but its values were also below the ERL (Effects Range Low). The results of the Geo-accumulation index of Cadmium indicate that the sediments in most studied stations of the three sites were moderately to strongly polluted (1.72-2.99). According to Geo-accumulation index all studied stations were found unpolluted with respect to Mn, Cu, Zn and Fe, while Pb was found up to moderate values. The contamination factor of each metal was found in the following order Cd>Pb>Cu>Mn>Zn. The contamination factor of the study area shows that this area has Moderate to Considerable contamination. In the present study, the MERM-Q values range 0.08-0.16 with average values 0.11 which indicates that metal concentrations are approximately with 9-21% probability of toxicity to the benthic organisms. The values of the Potential Ecological Risk Index in the studied stations show considerable to very high risk from metal contamination in the following order: Hub River estuary>Hub River>Gadani coast.
Authors and Affiliations
Monawwar Saleem, Javed Aftab, Syed Imran Hasaney, Sanober Kahkishan, Syed Wsaeem Haider, Mohsin Muzaffar
Keywords
Related Articles
- EP ID EP38820
- DOI -
- Views 193
- Downloads 0
Increased interleukin-6 is associated with low cardiorespiratory fitness in healthy people
To determine the relationship of maximal oxygen consumption as a cardiorespiratory marker with systemic inflammation. We measured fasting serum interleukin-6 (IL-6) and Tumor necrosis factor-α (TNF-α) and cardiorespira...
Locating QTLs controlling genotypic stability in Rye using AMMI model and AMMI based stability statistics
To locate QTLs controlling yield and yield stability in Rye, 7 disomic addition lines of Secale cereale into the genetic background of Chinese Spring (CS= recipient) were used in a completely randomized block design wit...
The effects of micronutrients foliar application on some biochemical and physiological characteristics of two wheat (Triticum aestivum L.) cultivars under water deficit conditions
Two field experiments were carried out in 2011-2012 on research farm of Islamic Azad University of Kermanshah and Mahidasht Agricultural Research Center to study the effects of foliar application of micronutrients (Mn,...
Biomass and Carbon Sequestration Rate in a Young Eucalyptus Hybrid Plantation of Terai Central Forest Division
Biomass and carbon sequestration rate in a 2 year old plantation of Eucalyptus hybrid was estimated in Terai central forest division of Uttarakhand over a one year period extending between October-2009 to September-2010....
Climate change cost upon ecosystem services in the Sundarban mangrove forest in Bangladesh
The Sundarban forest, known as the mangrove protection region by the UNESCO for numerous world endangered species, is located in the southwest of Bangladesh that lies between the delta of the Ganges, Brahmaputra and Megh...