Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe
The study assessed toxic heavy metal concentrations in the upper Sanyati catchment in the Midlands Province in Zimbabwe and predicted their movements and potential impacts on ground water quality. Topographic surveying was used to determine borehole locations, elevations, hydraulic conductivity and...
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| Format: | Article |
| Language: | English |
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2016
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| Online Access: | http://www.ajol.info/index.php/ejesm/article/view/120484 |
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| author | Madebwe, Victor Munodawafa, Adelaide Mugabe, Francis T. Madebwe, Crescentia |
| author_facet | Madebwe, Victor Munodawafa, Adelaide Mugabe, Francis T. Madebwe, Crescentia |
| author_sort | Madebwe, Victor |
| collection | DSpace |
| description | The study assessed toxic heavy metal concentrations in the upper Sanyati catchment in the Midlands Province in Zimbabwe and predicted their movements and potential impacts on ground water quality. Topographic surveying was used to determine borehole locations, elevations, hydraulic conductivity and water yields. Monthly ground water samples were analyzed to determine concentrations of Cr, Pb, Cd and Ni for a period of two-years. The results obtained for the wet season showed mean concentration levels of Cr, Pb, Cd and Ni at 0.25, 0.015, 0.042 and 0.031mg/L respectively. Dry season mean concentration levels for Cr, Pb, Cd and Ni were 0.15, 0.07, 0.06 and 0.025 mg/L respectively. Water samples from boreholes located in areas where mining, mineral processing and agricultural activities were dominant, yielded the highest values of toxic heavy metals. Dilution Attenuation Factor (DAF) for each toxic heavy metal was calculated to observe metal behaviour along the contaminant path for each season. The results showed seasonal variation in the spatial distribution of each toxic heavy metal during the wet season between October to March and during the dry season between April to September. Overall, research results showed that concentrations of Cr, Pb, Cd and Ni were above the standard limits set by the World Health Organization. |
| format | Article |
| id | ir-11408-1028 |
| institution | My University |
| language | English |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ir-11408-10282022-10-15T20:45:08Z Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe Madebwe, Victor Munodawafa, Adelaide Mugabe, Francis T. Madebwe, Crescentia Heavy metals; Hydraulic conductivity; Ground water transportation; Contamination; Attenuation; Photometry. The study assessed toxic heavy metal concentrations in the upper Sanyati catchment in the Midlands Province in Zimbabwe and predicted their movements and potential impacts on ground water quality. Topographic surveying was used to determine borehole locations, elevations, hydraulic conductivity and water yields. Monthly ground water samples were analyzed to determine concentrations of Cr, Pb, Cd and Ni for a period of two-years. The results obtained for the wet season showed mean concentration levels of Cr, Pb, Cd and Ni at 0.25, 0.015, 0.042 and 0.031mg/L respectively. Dry season mean concentration levels for Cr, Pb, Cd and Ni were 0.15, 0.07, 0.06 and 0.025 mg/L respectively. Water samples from boreholes located in areas where mining, mineral processing and agricultural activities were dominant, yielded the highest values of toxic heavy metals. Dilution Attenuation Factor (DAF) for each toxic heavy metal was calculated to observe metal behaviour along the contaminant path for each season. The results showed seasonal variation in the spatial distribution of each toxic heavy metal during the wet season between October to March and during the dry season between April to September. Overall, research results showed that concentrations of Cr, Pb, Cd and Ni were above the standard limits set by the World Health Organization. 2016-04-26T08:40:39Z 2016-04-26T08:40:39Z 2015 Article http://www.ajol.info/index.php/ejesm/article/view/120484 en Ethiopian Journal of Environmental Studies and Management;Vol 8, No. 5 none |
| spellingShingle | Heavy metals; Hydraulic conductivity; Ground water transportation; Contamination; Attenuation; Photometry. Madebwe, Victor Munodawafa, Adelaide Mugabe, Francis T. Madebwe, Crescentia Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe |
| title | Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe |
| title_full | Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe |
| title_fullStr | Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe |
| title_full_unstemmed | Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe |
| title_short | Predicting toxic heavy metal movements in upper Sanyati catchment in the midlands province in Zimbabwe |
| title_sort | predicting toxic heavy metal movements in upper sanyati catchment in the midlands province in zimbabwe |
| topic | Heavy metals; Hydraulic conductivity; Ground water transportation; Contamination; Attenuation; Photometry. |
| url | http://www.ajol.info/index.php/ejesm/article/view/120484 |
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