Human health risks from heavy metals in fish of Buriganga river, Bangladesh

Md Saiful Islam,Md Monirul Islam,Md Kawser Ahmed,Goutam Kumar Kundu,Md Muzammel Hossain,Mohammad Abdul Baki

doi:10.1186/s40064-016-3357-0

Md Saiful Islam, Md Monirul Islam + Show 4 more

Open Access

https://doi.org/10.1186/s40064-016-3357-0

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Journal: SpringerPlus	Publication Date: Oct 3, 2016
Citations: 146	License type: CC BY 4.0

Affiliation: University of Dhaka, Jagannath University

Abstract

Heavy metals are known to cause deleterious effects on human health through food chain. Human health risks were evaluated from consumption of heavy metal contaminated fish from Buriganga River in Bangladesh. Whole body of five fish species (Puntius ticto, Puntius sophore, Puntius chola, Labeo rohita and Glossogobius giuris) were analyzed which contained various concentrations of Cd, As, Pb, Cr, Ni, Zn, Se, Cu, Mo, Mn, Sb, Ba, V and Ag. Concentrations of Mn, Zn, Se and Pb in all fish species were above the Food Safety Guideline (FSG) by WHO/FAO. Assessment of noncarcinogenic health hazard by target hazard quotient (THQ) indicated no concern from consumption of these fish except for Mn. However, all metals together may affect human health as revealed by hazard index (HI). The target cancer risk (TR) values suggested carcinogenic risk from Ni and As. Taken together it can be concluded that there is potential human health risk in consuming fish from river Buriganga.

Highlights

Chemical contamination of food is considered of the most significant sources of human health risks
Except L. rohita other fish species in this study were small indigenous species (SIS) which are generally consumed whole by Bangladeshi population
Zn was found at the highest concentration in all fish species followed by Mn, Cu and Cr

Summary

Introduction

Chemical contamination of food is considered of the most significant sources of human health risks. Health risk due to consumption of food from aquatic ecosystems contaminated with hazardous chemicals including metals has increased globally especially in developing countries such as Bangladesh. Essential metals (Cu, Co, Zn, Fe, Ca, Mg, Se, Ni and Mn) are required in very trace quantities for the proper functioning of enzyme systems, hemoglobin formation and vitamin synthesis in human. Excess of these essential metals results in metabolic disturbances (Hina et al 2011). Ba, Cd, Hg, Cr, and Kawser Ahmed et al SpringerPlus (2016) 5:1697

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