Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016
Zimbabwe has two major factories that have been manufacturing chrysotile asbestos cement products since the 1940s. Exposure monitoring of airborne fibres has been ongoing since the early 1990s. This study examines trends in personal exposure chrysotile asbestos fibre concentrations for the period 19...
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2022
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| Online Access: | https://pubmed.ncbi.nlm.nih.gov/34682496/ http://hdl.handle.net/11408/4755 |
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| author | Mutetwa, Benjamin Moyo, Dingani Brouwer, Derk |
| author_facet | Mutetwa, Benjamin Moyo, Dingani Brouwer, Derk |
| author_sort | Mutetwa, Benjamin |
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| description | Zimbabwe has two major factories that have been manufacturing chrysotile asbestos cement products since the 1940s. Exposure monitoring of airborne fibres has been ongoing since the early 1990s. This study examines trends in personal exposure chrysotile asbestos fibre concentrations for the period 1996-2016. Close to 3000 historical personal exposure measurements extracted from paper records in the two factories were analysed for trends in exposure. Exposure over time was characterised according to three time periods and calendar years. Mean personal exposure chrysotile asbestos fibre concentrations generally showed a downward trend over the years in both factories. Exposure data showed that over the observed period 57% and 50% of mean personal exposure chrysotile asbestos fibre concentrations in the Harare and Bulawayo factories, respectively, were above the OEL, with overexposure being exhibited before 2008. Overall, personal exposure asbestos fibre concentrations in the factories dropped from 0.15 f/mL in 1996 to 0.05-0.06 f/mL in 2016-a decrease of 60-67%. These results can be used in future epidemiological studies, and in predicting the occurrence of asbestos-related diseases in Zimbabwe. |
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| id | ir-11408-4755 |
| institution | My University |
| language | English |
| publishDate | 2022 |
| publisher | MDPI |
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| spelling | ir-11408-47552022-06-27T13:49:06Z Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 Mutetwa, Benjamin Moyo, Dingani Brouwer, Derk airborne asbestos fibre concentration chrysotile asbestos exposure personal exposure trends Zimbabwe has two major factories that have been manufacturing chrysotile asbestos cement products since the 1940s. Exposure monitoring of airborne fibres has been ongoing since the early 1990s. This study examines trends in personal exposure chrysotile asbestos fibre concentrations for the period 1996-2016. Close to 3000 historical personal exposure measurements extracted from paper records in the two factories were analysed for trends in exposure. Exposure over time was characterised according to three time periods and calendar years. Mean personal exposure chrysotile asbestos fibre concentrations generally showed a downward trend over the years in both factories. Exposure data showed that over the observed period 57% and 50% of mean personal exposure chrysotile asbestos fibre concentrations in the Harare and Bulawayo factories, respectively, were above the OEL, with overexposure being exhibited before 2008. Overall, personal exposure asbestos fibre concentrations in the factories dropped from 0.15 f/mL in 1996 to 0.05-0.06 f/mL in 2016-a decrease of 60-67%. These results can be used in future epidemiological studies, and in predicting the occurrence of asbestos-related diseases in Zimbabwe. 2022-03-24T14:02:07Z 2022-03-24T14:02:07Z 2021 Article 1660-4601 https://pubmed.ncbi.nlm.nih.gov/34682496/ http://hdl.handle.net/11408/4755 en International Journal of Environmental Research and Public Health;Vol.18 , Iss.20 open MDPI |
| spellingShingle | airborne asbestos fibre concentration chrysotile asbestos exposure personal exposure trends Mutetwa, Benjamin Moyo, Dingani Brouwer, Derk Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 |
| title | Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 |
| title_full | Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 |
| title_fullStr | Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 |
| title_full_unstemmed | Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 |
| title_short | Trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in Zimbabwe from 1996 to 2016 |
| title_sort | trends in airborne chrysotile asbestos fibre concentrations in asbestos cement manufacturing factories in zimbabwe from 1996 to 2016 |
| topic | airborne asbestos fibre concentration chrysotile asbestos exposure personal exposure trends |
| url | https://pubmed.ncbi.nlm.nih.gov/34682496/ http://hdl.handle.net/11408/4755 |
| work_keys_str_mv | AT mutetwabenjamin trendsinairbornechrysotileasbestosfibreconcentrationsinasbestoscementmanufacturingfactoriesinzimbabwefrom1996to2016 AT moyodingani trendsinairbornechrysotileasbestosfibreconcentrationsinasbestoscementmanufacturingfactoriesinzimbabwefrom1996to2016 AT brouwerderk trendsinairbornechrysotileasbestosfibreconcentrationsinasbestoscementmanufacturingfactoriesinzimbabwefrom1996to2016 |