title: [Contamination and Ecological Risk Assessment of Mercury in Hengshuihu Wetland, Hebei Province].
abstract: Investigation on the concentrations and the distribution characteristics of total mercury in atmosphere, water surface and soil/ sediments of Hengshuihu wetland was carried out based on a uniform set point sampling method. The geoaccumulation index and potential ecological risk index methods were simultaneously used to assess the mercury pollution in Hengshuihu wetland ecosystem. The results showed that: the total mercury content in Hengshuihu wetland atmosphere ranged from 1.0 to 5.0 ng · m⁻³, with an average of (2.9 ± 0.85) ng · m⁻³; the total mercury content in water surface ranged from 0.010 to 0.57 µg · L⁻¹, with the average value of (0.081 ± 0.053) µg · L⁻¹; the total mercury content in soil/sediment ranged from 0.001 0 to 0.058 mg · kg⁻¹, with an average of (0.027 ± 0.013) mg · kg⁻¹. The distribution features of total mercury in Hengshuihu wetland were as follows: the total mercury concentration in surface water of the shore was significantly higher than that in the center (P < 0.05), but the total mercury concentration of sediments in the center of the lake was significantly higher than that at the shore (P < 0.05); the total mercury in the soil of shore had a consistent trend with that in the atmosphere; high concentrations of total mercury pollution were accompanied by severe human activities. The geoaccumulation index showed that mercury pollution in Hengshuihu wetland was at clean level; potential ecological risk index showed mercury contamination had a low ecological risk in Hengshuihu wetland.
authors: Nai-shan
authors: NS
authors: Wang
authors: Man-yin
authors: MY
authors: Zhang
authors: Li-juan
authors: LJ
authors: Cui
authors: Mu-yuan
authors: MY
authors: Ma
authors: Liang
authors: L
authors: Yan
authors: Yong-lin
authors: YL
authors: Mu
authors: Peng
authors: P
authors: Qin
mesh_terms: D002681:China; D004463:Ecology; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D008628:Mercury / Q000032:analysis*; D018570:Risk Assessment; D012987:Soil / Q000737:chemistry; D014873:Water Pollutants / Q000032:analysis*; D053833:Wetlands
chemical_list: D012987:Soil; D014873:Water Pollutants; D008628:Mercury