Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana
Assessment was done of heavy-metal contamination and its related health risks in urban vegetable farming in Accra. Samples of irrigation water (n=120), soil (n=144) and five different kinds of vegetable (n=240) were collected and analyzed for copper, zinc, lead, cadmium, chromium, nickel and cobalt....
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2012
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/34650 |
| _version_ | 1855543171139764224 |
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| author | Lente, I. Keraita, Bernard N. Drechsel, Pay Ofosu-Anim, J. Brimah, A.K. |
| author_browse | Brimah, A.K. Drechsel, Pay Keraita, Bernard N. Lente, I. Ofosu-Anim, J. |
| author_facet | Lente, I. Keraita, Bernard N. Drechsel, Pay Ofosu-Anim, J. Brimah, A.K. |
| author_sort | Lente, I. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Assessment was done of heavy-metal contamination and its related health risks in urban vegetable farming in Accra. Samples of irrigation water (n=120), soil (n=144) and five different kinds of vegetable (n=240) were collected and analyzed for copper, zinc, lead, cadmium, chromium, nickel and cobalt. All water, soil and vegetable samples contained detectable concentrations of each of the seven heavy metals except for irrigation water which had no detectable chromium, cadmium and cobalt. All heavy-metal levels were below permissible limits except lead on vegetables which was 1.8-3.5 times higher. Health risk assessments showed for all elements that normal consumption of each of the vegetables assessed poses no risk. The highest hazard index obtained was 42 % for wastewater irrigated cabbage. Though within permissible limits, cabbage and ayoyo had the highest potential risk. Compared with previous studies on the same sites, the data show that the risk from heavy metals is less significance than that from pathogen contamination which has positive implications for risk mitigation. |
| format | Journal Article |
| id | CGSpace34650 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace346502025-02-24T06:54:18Z Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana Lente, I. Keraita, Bernard N. Drechsel, Pay Ofosu-Anim, J. Brimah, A.K. risk assessment heavy metals contamination vegetable growing urban agriculture wastewater irrigation public health sampling indicators Assessment was done of heavy-metal contamination and its related health risks in urban vegetable farming in Accra. Samples of irrigation water (n=120), soil (n=144) and five different kinds of vegetable (n=240) were collected and analyzed for copper, zinc, lead, cadmium, chromium, nickel and cobalt. All water, soil and vegetable samples contained detectable concentrations of each of the seven heavy metals except for irrigation water which had no detectable chromium, cadmium and cobalt. All heavy-metal levels were below permissible limits except lead on vegetables which was 1.8-3.5 times higher. Health risk assessments showed for all elements that normal consumption of each of the vegetables assessed poses no risk. The highest hazard index obtained was 42 % for wastewater irrigated cabbage. Though within permissible limits, cabbage and ayoyo had the highest potential risk. Compared with previous studies on the same sites, the data show that the risk from heavy metals is less significance than that from pathogen contamination which has positive implications for risk mitigation. 2012-12 2013-11-21T06:40:32Z 2014-02-02T16:39:50Z 2013-11-21T06:40:32Z 2014-02-02T16:39:50Z Journal Article https://hdl.handle.net/10568/34650 en Limited Access Springer Lente, I., Keraita, B., Drechsel, P. et al. Risk Assessment of Heavy-Metal Contamination on Vegetables Grown in Long-Term Wastewater Irrigated Urban Farming Sites in Accra, Ghana. Water Qual Expo Health 4, 179–186 (2012). https://doi.org/10.1007/s12403-012-0077-8 |
| spellingShingle | risk assessment heavy metals contamination vegetable growing urban agriculture wastewater irrigation public health sampling indicators Lente, I. Keraita, Bernard N. Drechsel, Pay Ofosu-Anim, J. Brimah, A.K. Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana |
| title | Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana |
| title_full | Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana |
| title_fullStr | Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana |
| title_full_unstemmed | Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana |
| title_short | Risk assessment of heavy-metal contamination on vegetables grown in long-term wastewater irrigated urban farming sites in Accra, Ghana |
| title_sort | risk assessment of heavy metal contamination on vegetables grown in long term wastewater irrigated urban farming sites in accra ghana |
| topic | risk assessment heavy metals contamination vegetable growing urban agriculture wastewater irrigation public health sampling indicators |
| url | https://hdl.handle.net/10568/34650 |
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