Juliet N. Tesi

Risk Assessment of Water Quality in Public Institutions in Warri, Delta State

This study aimed to evaluate the risks associated with water quality in public institutions in Warri, Delta State. Water samples were collected from five public institutions namely, School, Hospital, Mall, Church and Hotel. Physico-chemical and microbial analyses were conducted using standard methods. The water quality index (WQI) and risk assessment matrix (RAM) were applied the quality and potential risks. Results revealed slightly acidic pH levels (5.1-6.63) in water samples. Dissolved oxygen levels (3.8-4.2 mg/L) were below WHO recommendations.

Occurrence and Source Apportionment of Polycyclic Aromatic Hydrocarbons (PAHs) in Urban Soil of Udu, Near Warri, Delta State

The occurrence and sources of polycyclic aromatic hydrocarbons (PAHs) were assessed in urban soils of Udu, near Warri in Delta State, Nigeria. The PAHs were quantified with gas chromatography equipped with flame ionization detector (GC-FID) after extraction and clean-up of the extracts with n-hexane/dichloromethane. The concentrations of ∑16 PAHs in the urban soils ranged from 269 µg kg-1 to 853 µg kg-1