Comparative study of Heavy Metals Distribution in a Mechanic Workshop and a Refuse Dumpsite in Oluku and Otofure Benin City, Edo State, Southwestern Nigeria.

Abstract

A comparative study of heavy metals; Lead, Chromium, Arsenic, Nickel, Cadmium and Mercury distribution was carried out in Oluku and Otofure both in Metropolitan Benin City, Edo State Nigeria with the view to determine the level of concentration and contribution of each site investigated. Thirty eight (38) soil samples were collected from and around mechanic workshop in Oluku and refuse dumpsite in Otofure at depths of 0 -0.15m to 0.15 -0.30m. They were carefully labelled in polythene bags and then taken to the laboratory for digestion and analysis using Atomic Absorption spectrometer (AAS). The results obtained were subjected to statistical treatment at P < 0.05 at 95% confidence level; the ultimate results were presented in mean ± SD. A correlation coefficient range (r) of 0.63-0.94 at P < 0.001 two tailed was obtained suggesting a high relationship between the elements in the soil. By comparison, the results obtained show that mechanic workshop contributes more of the heavy metals assessed in the environment except for Cadmium whose concentration was found to be slightly higher in the refuse dumpsite.@JASEM

ASSESSMENT OF BIOCONCENTRATION FACTOR FOR SELECTED HEAVY METALS IN Talinum triangulare (WATER LEAF) GROWN IN THE VICINITY OF AUTOMOBILE WORKSHOP IN OLUKU, BENIN CITY

“…Oluku is a satellite town located on latitude 6 0 26' 58"N and longitude 5 0 35' 49"E which is experiencing the inflow of migrants from and around Benin City due to its strategic position. The map of the study area as adopted from Imasuen and Omorogieva (2013) cm, and 20-30 cm. The topsoil ranges from 0-10 cm, the subsoil ranges from 10-20 cm, and the bottom soil ranges from 20-30 cm.…”

Assessments of Heavy Metal Contamination in Groundwater Source from Benin Formation Aquifer in and around Dumpsite Environment, and its Impact on Human Health

“…These wastes contain hazardous environmental contaminants like Pb, Fe, Cr, Mercury (Hg), Arsenic (As) among others, and are beyond the OMOROGIEVA, OM; TONJOH, JA; BRISIBE, O average crustal values. Similarly, Akujieze (2004); Akujieze and Oteze, 2007;Imasuen and Omorogieva (2013a); Omorogieva et al (2016); Omorogieva and Tonjoh (2020) have studied the impacts of these wastes, particularly the heavy metals in urban groundwater system within Benin Formation Aquifer (BFA), and reported anomaly in the concentration of toxic heavy metal like Pb, Cr, Cd, As amidst other parameters in the study. Onyeobi and Akujieze (2014); Omorogieva et al (2016) demonstrated that soil characteristics play a pivotal role in groundwater contamination and area close to high anthropogenic activities like mining and dumpsite environment have a greater impact.…”