Anthropogenic influence on surface water quality of the Nhue and Day sub-river systems in Vietnam
Anthropogenic influence on surface water quality of the Nhue and Day sub-river systems in Vietnam
复制标题
人为对越南 Nhue 和 Day 河流系统地表水质的影响
DOI：
10.1007/s10653-009-9279-9
复制
发表时间：
2010
影响因子：
4.2
通讯作者：
Nguyen Quang Hung
中科院分区：
文献类型：
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作者：
P. Hanh;S. Sthiannopkao;Kyoung;D. Ba;Nguyen Quang Hung
为了研究越南Nhue和Day子河流系统14个物理和化学地表水参数的时空变化，在2007年旱季和雨季从43个采样点采集地表水样品。统计学处理采用Mann-Whitney U检验和聚类分析。结果表明，在雨季期间，日河的水质得到显着改善，而这是不是Nhue河的情况。然而，河水不符合越南地表水溶解氧（DO），生物需氧量（BOD 5），化学需氧量（COD），营养物质，总大肠菌群和粪大肠菌群的质量标准。这意味着，使用未经处理的河水饮用以及灌溉蔬菜的当地社区的健康可能面临风险。43个采样点根据水质特征，特别是地理位置和土地使用情况，被分为四个主要群组，并揭示了人为来源的污染程度。
In order to investigate the temporal and spatial variations of 14 physical and chemical surface water parameters in the Nhue and Day sub-river systems of Vietnam, surface water samples were taken from 43 sampling sites during the dry and rainy seasons in 2007. The results were statistically examined by Mann–Whitney U-test and hierarchical cluster analysis. The results show that water quality of the Day River was significantly improved during the rainy season while this was not the case of the Nhue River. However, the river water did not meet the Vietnamese surface water quality standards for dissolved oxygen (DO), biological oxygen demand (BOD5), chemical oxygen demand (COD), nutrients, total coliform, and fecal coliform. This implies that the health of local communities using untreated river water for drinking purposes as well as irrigation of vegetables may be at risk. Forty-three sampling sites were grouped into four main clusters on the basis of water quality characteristics with particular reference to geographic location and land use and revealed the contamination levels from anthropogenic sources.