Variation of indoor particulate matter concentrations and association with indoor/outdoor temperature : a case study in rural Limpopo, South Africa

Show simple item record Kapwata, Thandi Language, Brigitte Piketh, Stuart Wright, Caradee Yael 2018-05-25T12:02:45Z 2018-05-25T12:02:45Z 2018-03-23
dc.description.abstract There is still a pressing concern regarding the causes of poor indoor air quality and the consequent effects on health, because people spend a considerable amount of time indoors. Information about seasonal variation and the determinants of particulate matter (PM) concentrations could guide the design and implementation of intervention strategies. This study was conducted in Giyani, Limpopo province, South Africa. The main aim was to assess indoor air quality. Indoor PM and temperature were monitored to describe seasonal and diurnal patterns of indoor PM4 concentration and to estimate the association between PM concentrations and indoor as well as ambient conditions. Indoor PM4 was monitored hourly in kitchens for the duration of spring (September), summer (February) and winter (July). Indoor temperatures were monitored hourly in kitchens, living rooms and bedrooms. Outdoor temperature and outdoor relative humidity were also monitored for the same period. Indoor temperatures showed a large range in the three sampled seasons, with the maximum values raising the largest cause for concern. Maximum indoor temperatures in summer exceeded the threshold of 35 C, which has been shown to have adverse health effects. Occupants of the sampled households were exposed to indoor PM4 concentrations that exceeded national and international guidelines. Hourly indoor temperature was statistically significantly correlated to PM4 concentrations in the summer and spring (r = 0.22 and 0.24 respectively, p < 0.001 for both) and negatively correlated to outdoor relative humidity (r = 0.27, p < 0.001). Diurnal PM4 variations showed pronounced patterns with morning and evening peaks. PM4 was consistently higher throughout the day in summer compared to spring and winter. Community-based intervention strategies should consider these seasonal differences in PM4 exposure and tailor awareness messages for exposure prevention accordingly en_ZA
dc.description.department Geography, Geoinformatics and Meteorology en_ZA
dc.description.librarian am2018 en_ZA
dc.description.sponsorship The South African Medical Research Council Seed Flagship Grant, as well as funds from National Treasury under its Economic Competitiveness and Support Package. This research was also carried out for the iDEWS (infectious Diseases Early-Warning System) project supported by SATREPS (Science and Technology Research Partnership for Sustainable Development) Programme of JICA (JAPAN International Cooperation Agency)/AMED (Japan Agency for Medical Research and Development) in Japan and the ACCESS (Applied Centre for Climate and Earth Systems Science) program of NRF (National Research Foundation) and DST (Department of Science and Technology in South Africa). en_ZA
dc.description.uri en_ZA
dc.identifier.citation Kapwata, T., Language, B., Piketh, S. & Wright, C.Y. 2018, 'Variation of indoor particulate matter concentrations and association with indoor/outdoor temperature : a case study in rural Limpopo, South Africa', Atmosphere, vol. 9, no. 4, art. no. 124, pp. 1-14. en_ZA
dc.identifier.issn 2073-4433 (online)
dc.identifier.other 10.3390/atmos9040124
dc.language.iso en en_ZA
dc.publisher MDPI Publishing en_ZA
dc.rights © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license. en_ZA
dc.subject Air quality en_ZA
dc.subject Diurnal variation en_ZA
dc.subject Temperature en_ZA
dc.subject South Africa (SA) en_ZA
dc.subject Atmospheric temperature en_ZA
dc.subject Seasonal differences en_ZA
dc.subject Outdoor temperature en_ZA
dc.subject Intervention strategy en_ZA
dc.subject Design and implementation en_ZA
dc.subject Adverse health effects en_ZA
dc.subject Space heating en_ZA
dc.subject Rural areas en_ZA
dc.subject Indoor air pollution en_ZA
dc.title Variation of indoor particulate matter concentrations and association with indoor/outdoor temperature : a case study in rural Limpopo, South Africa en_ZA
dc.type Article en_ZA

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