Title of article :
Petroleum Hydrocarbons and Heavy Metals Risk of Consuming Fish Species from Oguta Lake, Imo State, Nigeria
Author/Authors :
wirnkor ، Verla Andrew Department of Chemistry, Group Research in Analytical Chemistry, Environment and Climate Change (GRACE CC) - Faculty of Science - Imo State University , Iheanyichukwu ، Opara Alexander Department of Geology - Federal University of Technology , Ebere ، Enyoh Christian Group Research in Analytical Chemistry, Environment and Climate Change (GRACE CC),Department of Chemistry - Faculty of Science - Imo State University , Ngozi ، Verla Evelyn Department of Environmental Technology - Federal University of Technology , C ، Ohazurike Natheniel Department of Crop Science and Biotechnology - Faculty of Agriculture - Imo State University , Kingsley ، Okoro U. Department of Physics - Faculty of Science - Imo State University , Chizoruo ، Ibe Francis Group Research in Analytical Chemistry, Environment and Climate Change (GRACE CC),Department of Chemistry - Faculty of Science - Imo State University , Amaka ، Ahuocha Pauline Department of Microbiology - Faculty of Science - Imo State University Owerri
Abstract :
Oguta lake has experienced lots of oil spills and heavy metals and petroleum hydrocarbons could constitute fish contaminants. In order to assess the potential danger associated with consumption of fish from the lake by children and adults the current research was conducted. 6 g of each fish species from the lake were homogenized and divided into two portions. One was digested with aqua-regia while the other was extracted with hexane using a soxhlet extractor. Extracts were analyzed for heavy metal and hydrocarbons concentrations with AAnalyst Perkin Elmer 400 AAS and Buck 530 GC respectively. Data was interpreted with pollution and risk assessment models. Results revealed that except for Hg and Ni all other metals were below permissible levels by Food and Agricultural Organization (FAO). Estimated dietary intakes (EDI mg/kg day^-1) were high in children (110.157) for C. spectaculurus to (25.212) for H. fossilis while adult (18.885) C. spectaculurus to (7.951) for H. fossilis. EDI varied for children (Fe Hg Zn Ag Pb Ni Cu Cd) and (Fe Zn Hg Ag Pb Ni Cu Cd) for adults. Target Hazard Quotient (THQ) was highest for Cd in both adults and children. Total petroleum hydrocarbon (μg/l) was high in O. leucosticus (11113755.94) H. fossilis (40210.66) C. spectaculums (35184.44) M. salmoides (6373.27). Fish species from Oguta lake could constitute a health risk with significant potential carcinogenic risk both in children and adults as estimated from fish consumption.
Keywords :
Assessment , Health , Permissible levels , pollution , Hazard quotient
Journal title :
Journal of Chemical Health Risks
Journal title :
Journal of Chemical Health Risks
