Open AccessAnalysis of Temporal Variations of Air Pollutant Concentrations in Ogoni Area, Niger Delta Region, Nigeria
Author(s) -
B. Yorkor,
T. G. Leton,
John N. Ugbebor
Publication year - 2021
Publication title -
asian journal of environment and ecology
Language(s) - English
Resource type - Journals
ISSN - 2456-690X
DOI - 10.9734/ajee/2021/v16i430260
Subject(s) - pollutant , environmental science , air pollution , nitrogen dioxide , ozone , air pollutants , particulates , air pollutant concentrations , niger delta , delta , pollution , hydrology (agriculture) , atmospheric sciences , environmental chemistry , meteorology , geography , chemistry , ecology , biology , geology , geotechnical engineering , aerospace engineering , engineering
This study investigated the temporal variations of air pollutant concentrations in Ogoni area, Niger Delta, Nigeria. The study used hourly data measured over 8 hours for 12 months at selected locations within the area. The analyses were based on time series and time variations techniques in Openair packages of R programming software. The variations of air pollutant concentrations by time of day and days of week were simulated. Hours of the day, days of the week and monthly variations were graphically simulated. Variations in the mean concentrations of air pollutants by time were determined at 95 % confidence intervals. Sulphur dioxide (SO2), Nitrogen dioxide (NO2), ground level Ozone (O3) and fine particulate matter (PM2.5) concentrations exceeded permissible standards. Air pollutant concentrations showed increase in January, February, November and December compared to other months. Simulation showed that air pollutants varied significantly by hours-of-the-day and days-of-the-week and months-of-the-year. Analysis of temporal variability revealed that air pollutant concentrations increased during weekdays and decreased during weekends. The temporal variability of air pollutants in Ogoni area showed that anthropogenic activities were the main sources of air pollution in the area, therefore further studies are required to determine air pollutant dispersion pattern and evaluation the potential sources of air pollution in the area.