Distribution and risk assessment of some heavy metals in surface water, sediment and grey mullet (Mugil cephalus) from contaminated creek in Woji, southern Nigeria.

• 影响指数: 7.001
• 发表时间: May 2020
• 来源期刊: Mar Pollut Bull
• DOI: 10.1016/j.marpolbul.2020.111042
• PMID: 32174495
• 文章类型: Journal Article
• 中科院分区: Q2
• 方向: 生物
• 作者列表: Ihunwo OC,Dibofori-Orji AN,Olowu C,Ibezim-Ezeani MU

关键词: Grey mullet; Hazard index; Heavy metals; Niger Delta; Southern Nigeria; Water

Mesh: Adult; Animals; Child; Environmental Exposure / statistics & numerical data; Environmental Monitoring; Food Contamination / statistics & numerical data; Humans; Metals, Heavy; Nigeria; Risk Assessment; Smegmamorpha; Water; Water Pollutants, Chemical

Abstract

The human health risk assessment associated with accumulation of nickel (Ni), cadmium (Cd), chromium (Cr), lead (Pb) and copper (Cu) in the tissues (gills, livers and muscles) of grey mullet (Mugil cephalus) collected from the creek in the Niger Delta region of Nigeria was investigated. Surface water, sediment and fish samples were collected and analysed from June to September 2019; estimated daily intake (EDI), target hazard quotient (THQ) and hazard index (HI) were determined. The mean concentration (mg/kg ww) of the tested metals followed the sequence: Cu (33.48 ± 15.54) > Cd (24.62 ± 12.11) > Pb (10.59 ± 9.12) > Cr (0.43 ± 0.66); while Ni was not detected in the sampled tissues. The HI for male and female (adults) are 7.612 and 7.840 respectively, while male and female (children) are 9.567 and 10.842 respectively.