Evaluating the health risks of heavy metals from vegetables grown on soil irrigated with untreated and treated wastewater in Arba Minch, Ethiopia
文献类型：期刊论文
| 作者 | Guadie, Awoke; Yesigat, Asamin; Gatew, Shetie; Worku, Abebe; Liu, Wenzong ; Ajibade, Fidelis Odedishemi; Wang, Aijie
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2021-03-20 |
| 卷号 | 761页码:- |
| 关键词 | Arba Minch Health risk Heavy metal Vegetable Wastewater |
| ISSN号 | 0048-9697 |
| 英文摘要 | Available freshwater scarcity significantly affects sustainable food production for the rapidly growing population. This problem has forced people in most parts of the world to use wastewater as a viable solution. However, wastewater reuse has some deleterious effects on human and environmental health. This study was designed to investigate the health risks (HRs) of heavy metals (HMs) from vegetables irrigated with untreated and treated wastewater. The composite wastewater was collected at various sites in Arba Minch town and subjected to aerobic-anoxic treatment. Treated and untreated wastewater (UTW) was used to irrigate vegetables (lettuce, cabbage and tomato), and HM results were compared with the control (tap water) and standards. Water, soil and vegetables were investigated for various physical and chemical properties. Human health effects due to vegetable consumption were analyzed using HR-index (HRI), target hazard quotient (THQ) and hazard index (HI). The results revealed that most of the water quality indexes were significantly enhanced after aerobic-anoxic treatment, suggesting that wastewater collected from different sires was suitable for biodegradation. Soil physicochemical analyses also showed that pH, cation exchange capacity, organic carbon and organic matter were higher for UTW irrigated soil. Heavy metal concentrations were relatively greater in soils than water used for irrigation purposes and vegetables. The HM concentration in vegetables was higher for UTW than for treated and tap water irrigated vegetables. In vegetables, the order of HM content was Fe > Mn > Zn > Pb > Cu > Cd. Tomato followed by cabbage and lettuce accumulated significant amount of HMs (Fe > Mn > Zn > Pb > Cu > Cd) in their different organs (fruit/leaf>root>stem). The individual and combined health indexes (HRI, THQ, and HI) showed that Pb and Cd have values greater than unity for wastewater irrigated vegetables, which could result in non carcinogenic disease for short/lifetime exposure in adults and children. Overall, consumption of vegetables can be safer when grown with treated effluent than with UTVV. (C) 2020 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46114]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 作者单位 | 1.Addis Ababa Sci & Technol Univ, Coll Biol & Chem Engn, Dept Environm Engn, Addis Ababa 16417, Ethiopia 2.Harbin Inst Technol, Sch Civil & Environm Engn, Shenzhen 518055, Peoples R China 3.Arba Minch Univ, Dept Biol, Coll Nat Sci, Arba Minch 21, Ethiopia 4.Chinese Acad Sci, Key Lab Environm Biotechnol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guadie, Awoke,Yesigat, Asamin,Gatew, Shetie,et al. Evaluating the health risks of heavy metals from vegetables grown on soil irrigated with untreated and treated wastewater in Arba Minch, Ethiopia[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,761:-. |
| APA | Guadie, Awoke.,Yesigat, Asamin.,Gatew, Shetie.,Worku, Abebe.,Liu, Wenzong.,...&Wang, Aijie.(2021).Evaluating the health risks of heavy metals from vegetables grown on soil irrigated with untreated and treated wastewater in Arba Minch, Ethiopia.SCIENCE OF THE TOTAL ENVIRONMENT,761,-. |
| MLA | Guadie, Awoke,et al."Evaluating the health risks of heavy metals from vegetables grown on soil irrigated with untreated and treated wastewater in Arba Minch, Ethiopia".SCIENCE OF THE TOTAL ENVIRONMENT 761(2021):-. |
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来源：生态环境研究中心
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