Aquifer vulnerability to pesticide leaching and its impact on groundwater
In this paper, aquifer vulnerability to pesticide leaching was studied by computing Vulnerability Indices (VI) for 24 different pesticides in Ord River Irrigation Area (ORIA), Western Australia. VI methodology uses one-dimensional advective-dispersive transport equation for a non-conservative chemic...
| Main Authors: | , |
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| Format: | Journal Article |
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Jerad Publications
2010
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| Online Access: | http://hdl.handle.net/20.500.11937/11098 |
| _version_ | 1848747714568781824 |
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| author | Anwar, Faisal Saing, Lawrence |
| author_facet | Anwar, Faisal Saing, Lawrence |
| author_sort | Anwar, Faisal |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper, aquifer vulnerability to pesticide leaching was studied by computing Vulnerability Indices (VI) for 24 different pesticides in Ord River Irrigation Area (ORIA), Western Australia. VI methodology uses one-dimensional advective-dispersive transport equation for a non-conservative chemical that follows first order decay and linear adsorption in soils. At first, the pesticides were classified based on their leachabilty ratio (t1/2/koc). Next, grid lines were constructed on the map of the study area and 160 locations were marked to calculate VI for all pesticides. Calculated vulnerability indices were ranked by quartiles for very high, high, moderate, low and very low category for all the locations in the study area to find out the most vulnerable sites. Same classification was also made for all the pesticides in each location to rank the pesticides based on their individual VI. Based on the results obtained and the frequency of uses, it was revealed that atrazine has the highest leaching potential in the study area. The most vulnerable site for atrazine leaching was checked using the available groundwater quality data and found that the atrazine concentration exceeds the Australian and New Zealand guidelines (>0.5μg/L) in this site. |
| first_indexed | 2025-11-14T06:53:32Z |
| format | Journal Article |
| id | curtin-20.500.11937-11098 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:53:32Z |
| publishDate | 2010 |
| publisher | Jerad Publications |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-110982017-01-30T11:22:52Z Aquifer vulnerability to pesticide leaching and its impact on groundwater Anwar, Faisal Saing, Lawrence In this paper, aquifer vulnerability to pesticide leaching was studied by computing Vulnerability Indices (VI) for 24 different pesticides in Ord River Irrigation Area (ORIA), Western Australia. VI methodology uses one-dimensional advective-dispersive transport equation for a non-conservative chemical that follows first order decay and linear adsorption in soils. At first, the pesticides were classified based on their leachabilty ratio (t1/2/koc). Next, grid lines were constructed on the map of the study area and 160 locations were marked to calculate VI for all pesticides. Calculated vulnerability indices were ranked by quartiles for very high, high, moderate, low and very low category for all the locations in the study area to find out the most vulnerable sites. Same classification was also made for all the pesticides in each location to rank the pesticides based on their individual VI. Based on the results obtained and the frequency of uses, it was revealed that atrazine has the highest leaching potential in the study area. The most vulnerable site for atrazine leaching was checked using the available groundwater quality data and found that the atrazine concentration exceeds the Australian and New Zealand guidelines (>0.5μg/L) in this site. 2010 Journal Article http://hdl.handle.net/20.500.11937/11098 Jerad Publications restricted |
| spellingShingle | Anwar, Faisal Saing, Lawrence Aquifer vulnerability to pesticide leaching and its impact on groundwater |
| title | Aquifer vulnerability to pesticide leaching and its impact on groundwater |
| title_full | Aquifer vulnerability to pesticide leaching and its impact on groundwater |
| title_fullStr | Aquifer vulnerability to pesticide leaching and its impact on groundwater |
| title_full_unstemmed | Aquifer vulnerability to pesticide leaching and its impact on groundwater |
| title_short | Aquifer vulnerability to pesticide leaching and its impact on groundwater |
| title_sort | aquifer vulnerability to pesticide leaching and its impact on groundwater |
| url | http://hdl.handle.net/20.500.11937/11098 |