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Distribution characteristics and influencing factors of Mercury (Hg) in the surface sediment of Yellow River Subaqueous Delta
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Xin-ying CHE1, Ming LIU1, 2, *, Fei-yu WANG1, Jing-bo CHEN1, Xue-shi SUN1, 2, De-jiang FAN1, 2
China Environmental Science | 2025, 45(5) : 2806 - 2815
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China Environmental Science | 2025, 45(5): 2806-2815
• Environmental Ecology •
Distribution characteristics and influencing factors of Mercury (Hg) in the surface sediment of Yellow River Subaqueous Delta
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Xin-ying CHE1, Ming LIU1, 2, *, Fei-yu WANG1, Jing-bo CHEN1, Xue-shi SUN1, 2, De-jiang FAN1, 2
Affiliations
  • 1.College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
  • 2.Key Laboratory of Submarine Geosciences and Technology, MOE, Ocean University of China, Qingdao 266100, China
Published: 2025-05-20
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Based on the analysis of the material composition and mercury（Hg）content in the surface sediments of the Yellow River subaqueous delta, the distribution characteristics and influencing factors of Hg in the region were examined. The results showed that the Hg content in the surface sediments ranged from 15.09 to 53.11µg/kg, with an average content of 36.32µg/kg, which was relatively low compared to other domestic and international marine areas. The Hg content in the sediments exhibited a'low-high-low-high' pattern from the shore to the sea, with peak concentrations observed at the shear front and in the fine-grained sediment areas offshore. Elevated Hg levels were also found in the sediments near Laizhou Bay in the southern region. Hg was primarily derived from natural sources but was also influenced by emissions from human activities. Hydrodynamic conditions played a crucial role in controlling the distribution of Hg, with a tendency for Hg to accumulate in fine-grained sediments. The 'filter' effect of the estuary, especially the shear front, significantly influenced the spatial distribution of Hg and its transport to the open sea. The distribution of Hg was also related to its carriers, such as organic carbon, carbonate minerals, and iron-manganese oxides. These carriers directly bound with Hg, affecting its distribution, and also influenced the properties of the sediments, thus indirectly influencing the distribution of Hg.

Yellow River Subaqueous Delta  /  Mercury  /  spatial distribution  /  influencing factors
Xin-ying CHE, Ming LIU, Fei-yu WANG, Jing-bo CHEN, Xue-shi SUN, De-jiang FAN. Distribution characteristics and influencing factors of Mercury (Hg) in the surface sediment of Yellow River Subaqueous Delta[J]. China Environmental Science, 2025 , 45 (5) : 2806 -2815 .
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  • Receive Date：2024-10-23
  • Online Date：2026-03-18
  • Published：2025-05-20
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  • Received：2024-10-23
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Affiliations
    1.College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
    2.Key Laboratory of Submarine Geosciences and Technology, MOE, Ocean University of China, Qingdao 266100, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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