North China University of Water Resources and Electric Power, Zhengzhou, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China; Henan Key Laboratory of Water Environment Simulation and Treatment, China; Henan Engineering Research Center of Water Pollution and Soil Damage Remediation, China.
Zhengzhou Environmental Monitoring Centre, Environment Protecting Bureau, Zhengzhou, China.
Mar Pollut Bull. 2019 Aug;145:138-147. doi: 10.1016/j.marpolbul.2019.05.032. Epub 2019 May 23.
To investigate the effects of the water-sediment regulation on the spatial variations of metals in the surface sediments of the Yellow River Estuary (YRE), sampling sites were set in 2015 (51 sites in June and 33 in October). The content of Cu, Pb, Cd, Cr, Zn, Ni and Mn was determined using inductively coupled plasma spectrometry and of Hg and As atomic fluorescence spectrometry. The results showed that the concentrations of metals in the sediments of YRE were lower after the regulation, while that of most metals increased in the tidal areas of the current estuary with fine particles. Environmental pollution and ecological risk of metals were mainly from Hg and Cd. Metals carried with the silt of the river should be focused. The findings were expected to update the current status of metal pollution of YRE and be helpful for the delicacy management of the regime and silt-laden rivers.
为研究水沙调控对黄河口表层沉积物中金属元素空间分布的影响，于 2015 年分别在 6 月（51 个站位）和 10 月（33 个站位）设置采样点。采用电感耦合等离子体质谱法（ICP-MS）和原子荧光光谱法（AFS）分别测定沉积物中 Cu、Pb、Cd、Cr、Zn、Ni、Mn 的含量，Hg 和 As 采用原子荧光光谱法（AFS）测定。结果表明，水沙调控后黄河口沉积物中金属元素浓度降低，而现行河口潮流区细颗粒沉积物中大部分金属元素浓度增加。Hg 和 Cd 是造成金属元素环境污染和生态风险的主要原因。应关注河流携带的泥沙中的金属元素。研究结果有望更新黄河口金属污染的现状，为黄河口精细管理和输沙河流的治理提供参考。
