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Assessment of heavy metals contamination and water quality characterization in the Nanming River, Guizhou Province.
Environmental Geochemistry and Health ( IF 4.2 ) Pub Date : 2020-09-10 , DOI: 10.1007/s10653-020-00710-3
Zhenhui Yuan 1, 2 , Qiuhua Li 1, 2 , Xinyang Ma 1, 2 , Mengshu Han 3
Affiliation  

The analysis to assess the water quality and potential ecological risks in sediments was carried out by means of the distribution characteristics of nutrient properties and heavy metals in water, and heavy metals in sediments from the Nanming River. The results from nutrient properties demonstrated that the majority of TN and TP exceeded the permissible limit and concentrated within the study area. The concentrations of heavy metal in water were lower than the permissible limits but may pose potential threat to aquatic ecosystems. Based on the potential ecological risk results of heavy metals in sediments, Cd posed risk to ecological environment, and the serious contaminations mainly existed in the center of Guiyang City. The multivariate statistical analyses were used to support the idea that the Upstream Area and Midstream Area were significantly dominated by NH4+, TP, TN and CODMn in water. Furthermore, landscape characteristics and hydrology condition better explained the certain trend of water quality. Finally, identifying relationship between nutrient properties and heavy metals that are key ecological components of ecosystem can potentially aid the advances for restoration of geochemical transformations and give rise to river restoration efforts.



中文翻译:

贵州省南明河重金属污染及水质特征评估

利用南明河水体中养分,重金属和沉积物中重金属的分布特征,对沉积物的水质和潜在的生态风险进行了评估。养分特性的结果表明,大部分TN和TP均超出了允许范围,并集中在研究区域内。水中的重金属浓度低于允许的限值,但可能对水生生态系统构成潜在威胁。从沉积物中重金属的潜在生态风险结果来看,镉对生态环境构成风险,严重污染主要存在于贵阳市中心。水中的4 +,TP,TN和COD Mn。此外,景观特征和水文条件更好地解释了水质的一定趋势。最后,确定养分特性和重金属之间的关系,重金属是生态系统的关键生态组成部分,有可能有助于恢复地球化学转化的进展并引起河流修复工作。

更新日期:2020-09-10
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