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Pengxin Cao

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Articles

Pollution assessment and source analysis of heavy metals and nutrients in sediments of Liujiaxia reservoir, upper Yellow River, China

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By Beibei Wang, Long Yan, Long Shi, Dili Li, Yanhang Hu, Zifeng Hong, Pengxin Cao
| Nature Verified
Abstract To investigate the pollution characteristics, ecological risks, and sources of nutrients and heavy metals in the sediments of the Liujiaxia Reservoir, 21 surface sediment samples were collected in August 2025. Concentrations of total nitrogen (TN), total phosphorus (TP), and eight heavy metals were determined, and pollution levels were evaluated using sediment quality guidelines (SQGs), the improved geo-accumulation index, and the potential ecological risk index.
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