Browsing by Author "Nnadozie, Chukwuemeka Fortunatus"

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    Evaluation of indoor air pollutants in selected hostels of tertiary institutions in Owerri-Nigeria
    (Federal University of Technology, Owerri, 2016-02) Nnadozie, Chukwuemeka Fortunatus
    This study was aimed at evaluating the concentration levels of indoor air pollutants in some selected hostels located in four tertiary institutions in Imo state, Nigeria. It was conducted from February 2012 to July 2012. The pollutants such as: H2S, NO2, CH4, NH3, SO2, CO, Particulate matters and meteorological parameters; temperature, relative humidity, wind speed were measured. The gases were monitored using in-situ gas monitors while meteorological parameters were measured using multi-digital environmental meter. The observed concentration levels of indoor pollutants across the locations range as follows: H2S, 0.02 to 0.082ppm, NO2, 0.008 to 0.05ppm, CH4, 0.00 to 0.01ppm, NH3, 0.01 to 0.2ppm, SO2, 0.004 to 0.05ppm, CO, 0.6 to 9.25 ppm and particulate matters, 7.0 to 83Åg/m3 . The results revealed that the levels of pollutants were within the permissible limits of USEPA, WHO and FEPA. Multiple linear regression analysis of pollutants with meteorological parameters gave R- square (R2) values ranging between (0.490 to 0.618), implying that the studied meteorological parameters jointly influenced (49 to 62%) levels of the pollutants in the studied locations. The monthly means of the pollutants were analyzed using two way Analysis of variance (ANOVA), and some of the results showed probability levels at (p < 0.01 and p < 0.05). These generated indoor pollutants can build up to levels of public health concerns and have also been associated with a growing burden of diseases. It is therefore recommended that periodic monitoring of indoor pollutants; use of improved stoves and fuels, as well as improving ventilation systems could reliably protect the indoor environment and reduce human exposures