Residential indoor air quality assessment in Ibadan metropolis, Nigeria

Abstract Given the importance of the indoor air quality to healthy living, this study provides a situation analysis of residential indoor environments in Ibadan Metropolis. Data on building attributes and concentrations of inhalable particles (PM10) were obtained from 421 buildings, across high, medium and low-density residential areas with the aid of a structured questionnaire and MetOne-531S Particle Counter. Descriptive statistics were used to summarize collected data, while cooking fuel use index (CFUI) was computed using summative indexing on a five-point Likert response format. Findings revealed the preponderance of rooming building types (50.6%), side-hung windows (47.0%) and generators (51.8%). Ambient PM10 concentrations in residential areas revealed relatively low indoor air quality, with the low-density residential areas alone exhibiting a mean PM10 concentration (89.51 μg/m3) significantly lower than prescribed limit. Analysis of Variance (ANOVA) showed a significant difference in mean indoor PM10 for the different building types (F = 9.811, p = 0.0005) with rooming buildings having the highest concentration (429.23 μg/m3). Among residents, firewood (2.06), charcoal (3.10) and gas (3.61) exhibited the highest CFUI scores and there was a fairly weak but significant negative correlation (r = − 0.281; p = 0.0005) between cooking fuel efficiency and indoor PM10 levels. On the whole, inhalable particle pollution was higher in medium and high-density residential areas, varied with building types and driven by cooking fuels in the study area. A transition toward cleaner fuels and simple domestic preferences that could be revised were explicated upon as necessary measures to improve indoor air quality of residential dwellings in the city.

Abstract licence: CC BY-NC-ND

14 more references, whose wording the paper’s licence keeps private.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.