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Abstract

This study examines the effects of Warri refinery effluent on the Iffie river and its environs. It asserts the nature of effluent released into the water body and also the effect of effluent on water quality. The data that were used in this research where generated from direct field measurement of pH, Conductivity, Total Hardness, Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Turbidity, and heavy metal profiles (Mg, Zn, Cr, Ni, Cl, Cu, H2S, P) from the Iffie, Ubeji and Ughoton Rivers respectively. However, the Turbidity, Hydrogen Sulphide, Total Suspended Solids (TSS), Copper, Chromium records in Iffie and Ubeji Rivers were found to be higher than the WHO and FEPA standards, thereby making the water in these areas not suitable for consumption. Based on the findings, recommendations were proffered.

This study investigated the levels and spatial distribution of key air quality parameters within Asaba and environs.Five locations were sampled to assess the concentration of Nitrogen dioxide (NO2), Sulphur dioxide (SO2), hydrogen sulphide (H2S), carbon monoxide (CO) and volatile organic compounds (VOCs). Measurement of Air pollutants methods approved by ASTM was adopted for each specific parameter. All equipment and meters were properly precalibrated before each usage for quality assurance.Findings of the study showed that measured levels of CO (0.08-0.20 ppm),H2S (0.01-0.10 ppm) and VOCs (13-20 ppm) in all sampling areas were below World Health Organization (WHO) and National Air Quality (NAQ) Guidelines and Standards for ambient conditions. However, NO2 (0.11-0.25 ppm) in all sampling areas was quite high and above regulatory limits.SO2 (0.15-0.25 ppm) was within the acceptable limit in Okwe and Ibusa but above regulatory limits in Asaba,Anwai and Okpanam.The results suggest Routine measurements should be made on a continuous basis to ascertain the volume of gaseous pollutants in the urban and rural environments

The derived savanna landscape of Delta state situated within the rainforest region are always considered with apathy as they are viewed as idle, marginalized or abandoned landscapes. The study therefore focused on statistical analysis of the physiochemical properties of the derived savanna, rainforest and fallow landscapes of Delta state. The statistical analysis gave impetus for the derivation of Soil Fertility Index (SFI). The hypothesis formulated to guide the study was tested using the one-way Analysis of Variance (ANOVA). This was used to test the variation between soil physiochemical parameters of the various landscapes at 0.05 significance level. Specifically, the study found out that the physiochemical parameters of the landscapes studied are significantly correlated. Thus, implying basic similarities in soil fertility and soil constituent tendencies between the landscapes.