School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou, People's Republic of China.
Lanzhou Hanxing Environmental Protection Co., Ltd., Lanzhou, 730070, China.
Environ Sci Pollut Res Int. 2021 Jan;28(3):2904-2913. doi: 10.1007/s11356-020-10349-3. Epub 2020 Sep 7.
Surface sediments were collected from 122 sites in the upstream of the Yellow River, China. The concentration of Fe, Mn, Cu, Ni, Zn, Cr, Pb, and Cd in sediments was investigated to explore the spatial distribution based on statistics and interpolation method. The results suggested that the concentrations of heavy metals were lower than potential effect levels (PEL). The samples above threshold effect level (TEL) for Pb and Zn were less than 10%, while almost 50% of samples for Ni exceeded PEL. Pb and Zn in sediments performed little or no adverse effects on the aquatic ecosystems. Higher concentrations of all heavy metals occurred in Qinghai and Gansu sections; the concentrations of Cu, Ni, and Zn were significantly higher than the Inner Mongolia section. Lower concentration of Fe, Mn, Cu, Ni, and Zn appeared in Qinghai section; the concentrations of Fe, Mn, Cr, and Pb manifested relatively steady and similar distributions and approximately decreasing tendency along the upstream of Yellow River.
从黄河上游的 122 个采样点采集了表层沉积物。采用统计和插值方法研究了沉积物中 Fe、Mn、Cu、Ni、Zn、Cr、Pb 和 Cd 的浓度，以探讨其空间分布。结果表明，重金属浓度低于潜在效应水平（PEL）。Pb 和 Zn 的样品超过了阈值效应水平（TEL）的比例小于 10%，而近 50%的 Ni 样品超过了 PEL。沉积物中的 Pb 和 Zn 对水生态系统几乎没有或没有不良影响。青海和甘肃段的所有重金属浓度都较高；Cu、Ni 和 Zn 的浓度明显高于内蒙古段。青海段的 Fe、Mn、Cu、Ni 和 Zn 浓度较低；Fe、Mn、Cr 和 Pb 的浓度表现出相对稳定且相似的分布，沿黄河上游呈逐渐降低的趋势。
