Evaluation of Nutrient and Heavy Metal Pollution in Maozhou River in Shenzhen City

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Zhu, Daiwen^1,2 ; Wu, Shizhang^3 ; Lu, Nan^1,2

Shaanxi Provincial Land Engineering Construction Group Co. Ltd, Xi'an

710075, China^1

Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co. Ltd, Xi'an

710075, China^2

PowerChina Northwest Engineering Corporation Limited, Xi'an city, Shaanxi province, China^3

关键词: Different particle sizes;    Heavy metal contents;    Heavy metal pollution;    Interstitial water;    Nitrogen and phosphorus;    Physicochemical property;    Potential ecological risk;    Single factor evaluation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032156/pdf
DOI  :  10.1088/1755-1315/170/3/032156

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The sediment of Shenzhen Mazhou River was collected and sieved with different particle sizes to determine the physicochemical properties, nutrient contents and heavy metal contents of sediment, interstitial water and oversize mud. At the same time, the single factor evaluation and potential ecological risk assessment of heavy metals were carried out on the sediment of Mazhou River. The experimental results show that the screening of different particle size has little influence on the physicochemical properties and nutrient content of sediment. Mazhou River nitrogen and phosphorus nutrients pose little ecological risk effect on the environment. The ecological risk ranking of heavy metals is Hg> Cd> Cu> Ni> As> Zn = Cr> Pb. Mazhou river sediment comprehensive potential risk index RI values are greater than 1200, indicating that Maozhou river was in extremely high risk. Among them, Hg contributes the most, which is the most important factor controlling the risk of heavy metal pollution in sediment.