Bioaccumulation of heavy metals in intestine of mulley (wallago attu, bloch & schneider, 1801): a case study of kalpani river at district mardan, Khyber Pakhtunkhwa, Pakistan
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2015, Vol 6, Issue 2
Abstract
The concentration of five heavy metals like lead (Pb), chromium (Cr), cadmium (Cd), Zinc (Zn) and Nickel (Ni) were assessed in the intestine of freshwater fish Mulley (Wallago attu), collected from Kalpani river at district Mardan, Khyber Pakhtunkhwa, Pakistan. Sampling was carried out during the months of July to October, 2013. For determining heavy metals concentration, Perkin Elmer AS 3100 flame atomic absorption spectrophotometer was used. Heavy metals concentration was varying among sampling months and sites. Overall mean values recorded (wet weight) for Cr, Cd, Zn and Ni were 0.069±0.068 μg g-1, 0.008±0.004 μg g-1, 0.427±0.100 μg g-1 and 0.059±0.032 μg g-1 respectively. However, Pb was not detected in any of the collected sample across all the sampling sites. The results showed metals bio accumulation in the intestine of Mulley, in order of Zn>Cr>Ni>Cd with no detection of Pb. Results showed, all the studied heavy metals were falling in the suggested permissible limits. In order to conserve and maintain the water, sediments and fish biodiversity of the river, regular assessment should be carried out and strict environmental policies should be planned by environmental protection agencies. Mass awareness should be initiated. The effluents and other wastes from the industries in the nearby areas should be treated before entering the river.
Authors and Affiliations
Iram Alam Sthanadar, Benazir Begum, Aftab Alam Sthanadar,Muhammad Jamal Nasir, Imtiaz Ahmad, Muhammad Zahid, Ali Muhammad, Sana Ullah
Keywords
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