Water Quality in Surface Water: A Preliminary Assessment of Heavy Metal Contamination of the Mashavera River, Georgia.
Water Quality in Surface Water: A Preliminary Assessment of Heavy Metal Contamination of the Mashavera River, Georgia.
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DOI：
10.3390/ijerph15040621
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发表时间：
2018-03-28
影响因子：
--
通讯作者：
Ploeger A
中科院分区：
文献类型：
--
作者：
Withanachchi SS;Ghambashidze G;Kunchulia I;Urushadze T;Ploeger A
重金属污染的水质对公众健康造成严重影响。在马沙维拉河流域，格鲁吉亚国家粮食系统的一个重要农业区（如蔬菜、乳制品和葡萄酒生产），水污染对区域和全国健康有多重影响。随着该地区的新工业活动，沉积物的提取以及未经处理的废水排放到河流及其支流和灌溉渠中，迫切需要对水质进行全面研究。本研究对马沙维拉河流域17个采样点在高降水季和低降水季的沉积物和水样进行了检测。利用地质积累指数（Igeo）、富集系数（EF）、污染负荷指数（PLI）、污染系数（CF）和金属指数（MI）对结果进行了表征。根据CFs，两个季节收集的沉积物中所有观测到的重金属含量依次为Cu > Cd > Zn > Pb > Fe > Mn > Ni > Cr > Hg。另外还检测了水样中的铁和砷。总体而言，砷、镉和铅均为高毒性元素，在下游采样点的浓度较高。根据这些结果，强烈建议在采样日期间隔较短的情况下进行综合监测，在所有水道增加采样点，并对多种微量金属元素进行近距离观察。此外，作为水质治理系统的一部分，强烈建议所有利益相关者立即采取可持续的集体行动来控制污染水平，因为这一问题与国家粮食系统的安全有关，并对当地的公共卫生构成威胁。
Water quality contamination by heavy metal pollution has severe effects on public health. In the Mashavera River Basin, an important agricultural area for the national food system in Georgia (e.g., vegetable, dairy and wine production), water contamination has multiple influences on the regional and country-wide health. With new industrial activities in the region, sediment extraction, and discharge of untreated wastewater into the river, its tributaries and irrigation canals, a comprehensive study of water quality was greatly needed. This study examined sediment and water samples from 17 sampling sites in the Mashavera River Basin during the high and low precipitation seasons. The results were characterized utilizing the Geo-accumulation Index (Igeo), Enrichment Factor (EF), Pollution Load index (PLI), Contamination Factor (CF) and Metal Index (MI). According to the CFs, Cu > Cd > Zn > Pb > Fe > Mn > Ni > Cr > Hg is the descending order for the content of all observed heavy metals in sediments collected in both seasons. Fe and As were additionally examined in water samples. Overall, As, Cd and Pb, all highly toxic elements, were found in high concentrations in downstream sample sites. According to these results, comprehensive monitoring with narrow intervals between sampling dates, more sample sites along all waterways, and proximate observation of multiple trace metal elements are highly recommended. Moreover, as the part of the water quality governance system, an immediate and sustainable collective action by all stakeholders to control the pollution level is highly recommended, as this issue is linked to the security of the national food system and poses a local public health risk.
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DOI：
10.1007/s11356-016-6678-1
发表时间：
2016-09
期刊：
Environmental science and pollution research international
影响因子：
--
作者：
Baran A;Tarnawski M;Koniarz T
通讯作者：
Koniarz T
影响因子：
8.9
作者：
Duodu, Godfred Odame;Goonetilleke, Ashantha;Ayoko, Godwin A.
通讯作者：
Ayoko, Godwin A.
影响因子：
3
作者：
Abrahim, G. M. S.;Parker, R. J.
通讯作者：
Parker, R. J.
影响因子：
9.8
作者：
Blaser, P;Zimmermann, S;Shotyk, W
通讯作者：
Shotyk, W
影响因子：
2.6
作者：
Fritsch, Oliver;Adelle, Camilla;Benson, David
通讯作者：
Benson, David