Pollution Level and Ecological Risk Rssessment of Heavy Metals in Riverside Sediments of the Grand Canal (Beijing, Tianj
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Pollution Level and Ecological Risk Rssessment of Heavy Metals in Riverside Sediments of the Grand Canal (Beijing, Tianjin and Hebei section) Li Shen1 · Yan Gan1 · Chengyu Li1 · Chao Wang1 Received: 12 March 2020 / Accepted: 26 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Pollution level and ecological risk assessment of heavy metals in riverside sediments of the Grand Canal (Beijing, Tianjin and Heibei sections) were studied. The concentrations of As, Ba, Cd, Co, Cr, Cu, Mn, Ni, Pb, V and Zn in shallow sediments were measured by ICP-MS. It was found that the concentrations of several heavy metals in shallow sediments were higher than the background values of soils in Beijing area. The results showed that the historical heavy metal discharge in the studied area still had some adverse effects on river sediments. The data of potential ecological risk assessment indicated that about 34.6% of the sampling sites reached medium ecological risk level. The main hazardous metal was Cd, and thus Cd should be managed in priority. Keywords The grand canal · Shallow sediment · Heavy metals · Potential ecological risk Beijing–Hangzhou Grand Canal is one of the longest ancient canals in the world, which remains active today. It starts from Hangzhou in the south and ends at Beijing in the north. It runs through four provinces of Zhejiang, Jiangsu, Shandong and Hebei, and two cities of Tianjin and Beijing, with a total length of about 1797 km. The canal has promoted the economic and cultural exchange between the north and the south of China. With urbanization, population explosion and rapid development of industry, a large number of domestic and industrial waste water were discharged into the canal, resulting in poor water quality, which seriously hindered the sustainable development of the region and the improvement of people’s living standards. In order to improve the ecological environment of the Grand Canal, the government has increased its efforts to improve the environment of the Grand Canal in recent years. However, the water environment management is very difficult because the canal spans many administrative areas, and some pollutants, especially heavy metal elements, have depositional effect. The canal management has a long way to go. * Chao Wang [email protected] 1
Logistic School, Beijing Wuzi University, Beijing 101149, China
As one of the main environmental pollutants, heavy metals are difficult to degrade, toxic and easy to bio-accumulate, which will have a continuous impact on the water ecosystem (Rashed 2010; Li et al. 2013). Therefore, the detection of heavy metals in river water and sediment has caused wide spread attention (Yan et al. 2016; Bai et al. 2017; Li et al. 2015; Chen et al. 2017; Lu et al. 2010; Wang et al. 2011; Chu et al. 2015). For example, Guo et al. (2015) studied heavy metal pollution in the South Canal and evaluated the ecological risk of heavy metals. Results showed that the potential ecological risk level of heavy metals in the south canal wa
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