Vol. 2, Issue 5 (2017)
Contamination status and health risk assessment of heavy metals in Oreochromis mossambicus of Budha Sagar pond, Rajnandgaon, Chhattisgarh, India
Author(s): Yaser Qureshi, Dr. Kanti Choubey
Abstract: Heavy metals are known pollutants due to their ability of bioaccumulation in organisms. Sewage may be contaminated by presence of heavy metals in it. Sewage fed fishery is of common occurrence in urban settlements, especially in under developed municipal areas. Effects of heavy metals on fishes are still thoroughly unexplored area in state of Chhattisgarh and Rajnandgaon town in particular. Present study is conducted to throw some light on this issue. Large number of population feeds on fishes so any negative deviation in any health related parameter may cause public health threat. This study was conducted on Oreochromis mossambicus fish in year long duration for three season namely winter, Summer and Post monsoon season to know concentration of heavy metals Fe, Cd, Cr, Pd and Hg in fish tissues (Gill, Liver and Muscle). For determination of quality of water and intensity of heavy metal contamination, indices like OWQI, THQ and MPI are employed. OWQI shows that budha sagar pond is in good and fair condition. THQ is used for determination of contamination due to non-carcinogen. Overall THQ is in the safe limit for all the metals investigated. Mean MPI is recorded highest in gills and lowest in muscles, so we can say gills are mostly and directly affected by heavy metals. All the investigated parameters in present study are within the safe limit but heavy metals like Cd and Hg are reported here so measures should be applied to curb the menace of heavy metals in this urban wetland.