Assessment of heavy metal residues in water, fish tissue and human blood from Ubeji, Warri, Delta State, Nigeria

Journal of Applied Sciences and Environmental Management

AWOBODE, HENRIETTA O.¹  AKINTUJOYE, JOY F.¹  ANUMUDU, CHIAKA I.¹ 

关键词: Heavy metal residues;    Fish tissue;    Human blood;    Ubeji River.;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

Residual levels of lead, chromium, cadmium and zinc in water and fish tissue fromUbeji River, Warri and blood samples from residents of Ubeji were analysed. Control water and fishsamples were obtained from Eleyele River and blood from residents of Ibadan. All the samplescollected were digested using a modified procedure from the Association of Official AnalyticalChemists (AOAC) and were subsequently analyzed using Atomic Absorption Spectroscopy. Levels oflead and cadmium in Ubeji river were significantly higher than levels in Eleyele River. Fifty fishsamples from five species ( Citharinus citharus , Liza falcipinis , Brycinus macrolepidotus , Polydactylus quadrifilisand Tilapia zilli ) were analysed. Lead concentration (ppm) was highest in C. citharus(76.07±161.48) and least in T. zilli (23.16±26.30). Chromium was not detected in B. macrolepidotus,P. quadrifilis and T. zilli. Concentrations of all heavy metals detected, except zinc, in the fish specieswere higher than WHO permissible limit. Lead, Cadmium and Zinc concentrations in the tissues of thecontrol fish were significantly lower (p>0.05) than those recorded in fish from Ubeji River. There wereno statistically significant differences in heavy metal concentration in fish gills and muscle (p>0.05).Lead and cadmium levels in Ubeji river significantly exceeded (p=0.0 and p=0.012) the permissiblelimits for aquaculture and drinking. Levels of Chromium (1737.17±2996.01), Zinc and Lead(149.35±188.28 and 123.49±350.85 respectively) were significantly high (p

【 授权许可】

Unknown