Twenty-eight transects in six urban rivers located in the Qianhai area of Baoan District, Shenzhen, China, were selected to study the contamination of heavy metals in its sediment, reveal the spatial distribution of heavy metals in these rivers, and assess the ecological risk of heavy metals in the urban river sediment. The result showed that the concentration of heavy metals displayed considerable variation in the study area. The results showed that southern airport drainage river had exposure to high concentrations of Cu, Nanchang Chung exposure to high concentrations of Zn, Cr, and Pb, Gongle Chung exposure to high concentrations of Ni, and Xixiang River exposure to high concentrations of Hg. The results of correlation analysis and cluster analysis indicated that Cu had significant correlations with Zn and Cr respectively (P < 0.05). There was significant correlation, and the same cluster existed among Zn, Cr, and Pb (P < 0.01), whereas Hg was not significantly correlated with other metals. The potential risk of the six rivers could be sorted as Gushu Chung < Gongle Chung < Tiegang reservoir flood discharge river < Xixiang River (a), Nanchang Chung < and Southern Airport drainage river.

中文翻译：

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流入珠江口的城市河流泥沙中重金属的空间分布及相关风险。

选择位于深圳宝安区前海地区的六条城市河流中的28个样带，研究其沉积物中重金属的污染，揭示这些河流中重金属的空间分布，并评估生态风险城市河流沉积物中的重金属含量。结果表明，重金属的浓度在研究区域内显示出相当大的变化。结果表明，南部机场排水河暴露于高浓度的铜，南昌涌暴露于高浓度的锌，铬和铅，贡勒涌暴露于高浓度的镍，西乡河暴露于高浓度的汞。相关分析和聚类分析的结果表明，铜分别与锌和铬具有显着的相关性（P <0.05）。锌，铬和铅之间存在显着的相关性，并且存在相同的簇（P <0.01），而汞与其他金属的相关性不明显。六大河的潜在风险可分为古树涌<龚乐涌<铁岗水库泄洪河<西乡河（a），南昌涌<和南部机场排水河。