Heavy Metals Concentration in Fish Mugil cephalus from Machilipatnam Coast and Possible Health Risks to Fish Consumers

Abstract

Heavy metals are dangerous to aquatic organisms and it can be bioaccumulated in the food chain leading to diseases in humans. Cumulative effects of metals or chronic poisoning may occur as a result of long term expore even to low concentrations. The accumulation of heavy metals conditions depending upon the species, environmental conditions and inhibitory processes. Considering the human health risk due to the consumption of fish, the concentration of heavy metals (Zn, Pb, Mn, Cu, Cr and Hg) are investigated in fish samples collected from the Machilipatnam coast. The fish was examined for metal constituents are the basis on the human nutrition in the study area. These metal concentrations were exceeding the limits set by the world health organization (WHO). The study provides an insight into the potential impact of increased levels of metals in the environmental as well as estimated of the contaminated of fish tissues with metals.

Concentration of Heavy Metals and Health Risk Assessment of Consumption of Fish (Sarotherodon melanotheron) from an Estuarine Creek in the Niger Delta, Nigeria

“…THQ > 1 has been said to indicate potentials of non carcinogenic risk to human exposures [42,43,44] particularly with increase in metal exposure. The THQ of metals in this study (<1) agrees with the findings of [45] and [46] but disagreed with the findings of [47] who reported >1 THQ for Pb, Cr, and Hg in fish from the coast of India. The Hazard index (HI) of all the metals was also calculated in view of the fact that more than one metal can often be bioaccumulated in fish tissue as observed in this study.…”

Bioaccumulation of metals in fish species from water and sediments in macrotidal Ennore creek, Chennai, SE coast of India: A metropolitan city effect

“…Fishes being resistant to chromium content are affected partially when there is increase in concentration due to the external inputs (Krishna et al, 2014). This low toxic, essential trace element aids in the glucose metabolism.…”

Status Assessment of Heavy Metals in Water of the Lepenci River Basin, Kosova

“…The concentration of Cr can result from industrial and mining processes. Fish are usually more resistant to Cr than other aquatic organisms, but they can be affected sub-lethally when the concentration increases [Krishna et al, 2014].…”

“…Mn is a metal with low toxicity but has a considerable biological significance and seems to accumulate in fish [Kumar et al, 2011]. According to [Krishna et al, 2014], high Mn concentration interferes with the central nervous system of vertebrates; hence, the consumption of Mn contaminated fish potentially resulting in health risks to the consumers is a matter of concern. High concentration of Mn causes liver cirrhosis and also produces a poisoning called Manganese or Parkinson disease [Bradi, 2005].…”