Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jafrearsci.2018.06.032 |
Effect of flash flood on trace metal pollution in the groundwater - Wadi Baysh Basin, western Saudi Arabia | |
Basahi, Jalal M.1; Masoud, Milad H. Z.2,3; Rajmohan, N.2 | |
通讯作者 | Masoud, Milad H. Z. |
来源期刊 | JOURNAL OF AFRICAN EARTH SCIENCES
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ISSN | 1464-343X |
EISSN | 1879-1956 |
出版年 | 2018 |
卷号 | 147页码:338-351 |
英文摘要 | This study focused on the impact of flash flood (FF) on trace metal pollution in the groundwater, Wadi Baysh Basin, Western Saudi Arabia using spatial interpolations, integrating pollution indices and statistical analysis. Groundwater (n = 182) is neutral to alkaline in nature and the order of mean metals before and after FF are Sr > Ba > B > Fe > Al > V > Mn > Cr > Cu = Pb > Mo > Zn and Sr > Al > B > Fe > V > Ba > Cr > Cu > Pb > Mn > Mo > Zn > Ni > Cd, respectively. Enhancement (Al, Cr, Cu, Mn, Mo, Pb and V) and depletion (B, Ba, Fe, Sr) of trace metals are noticed in the groundwater after FF, which is due to dilution, dissolution/desorption, flushing of weathered layer, saline sources and surface input. Before and after FF, 57-63%(Pb), 55-56%(V), 43-16%(B), 27-0%(Ba), 15-5%(Sr), 6-3%(Fe), 0-16%(Al), 0-9%(Cr) and 1-2%(Mn) of groundwater samples, respectively, exceeded the drinking water standards. Coastal wells have elevated B, Sr and Mn concentration due to saline water intrusion. Integrated pollution evaluation indices (Heavy metal pollution index (HPI), Contamination index (C-d) and Heavy metal evaluation index (HEI)) reveal that number of samples in the unsuitable classes are increased after FF event (HPI: 13%-55%; Cd: 11%-38%; HEI: 5%-19%) and groundwater quality is degraded due to the trace metals enhancement after FF especially in the downstream wells. Wells in the upstream is flushed by FF recharge and groundwater flow accumulated the metals in the downstream and coastal region. This study demonstrates that metal accumulation and mobility are regulated by the groundwater flow in the study region. Pearson correlation analysis and Principle component analysis also justify that water chemistry is influenced by the saline sources, flushing of weathered layer, natural processes and anthropogenic inputs. Continuous groundwater monitoring is an important task to protect and manage valuable groundwater resources in the arid region. |
英文关键词 | Groundwater Trace metals Flash flood Pollution indices Baysh basin Saudi Arabia |
类型 | Article |
语种 | 英语 |
国家 | Saudi Arabia ; Egypt |
收录类别 | SCI-E |
WOS记录号 | WOS:000447096300027 |
WOS关键词 | HEAVY-METALS ; WATER ; CONTAMINATION ; MANGANESE ; RIVER ; SOIL ; RISK ; FERTILIZERS ; SEDIMENT ; IMPACTS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/210420 |
作者单位 | 1.KAU, Fac Meteorol Environm & Arid Land Agr, Dept Hydrol, Post Box 80200, Jeddah 21598, Saudi Arabia; 2.KAU, Water Res Ctr, Post Box 80200, Jeddah 21598, Saudi Arabia; 3.Desert Res Ctr, Hydrol Dept, Cairo, Egypt |
推荐引用方式 GB/T 7714 | Basahi, Jalal M.,Masoud, Milad H. Z.,Rajmohan, N.. Effect of flash flood on trace metal pollution in the groundwater - Wadi Baysh Basin, western Saudi Arabia[J],2018,147:338-351. |
APA | Basahi, Jalal M.,Masoud, Milad H. Z.,&Rajmohan, N..(2018).Effect of flash flood on trace metal pollution in the groundwater - Wadi Baysh Basin, western Saudi Arabia.JOURNAL OF AFRICAN EARTH SCIENCES,147,338-351. |
MLA | Basahi, Jalal M.,et al."Effect of flash flood on trace metal pollution in the groundwater - Wadi Baysh Basin, western Saudi Arabia".JOURNAL OF AFRICAN EARTH SCIENCES 147(2018):338-351. |
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