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- W4380894168 abstract "Estuaries control the amount of Hg transported from rivers to coastal seas. The adsorption of Hg(II) on suspended particulate matter (SPM) is the key process that affects the behavior of Hg in estuaries since most riverine Hg is deposited with SPM in estuaries. In this study, the concentrations of particulate Hg (PHg) were higher than those of dissolved Hg (DHg) at the Xiaoqing River Estuary (XRE) and the Yellow River Estuary (YRE), indicating that SPM plays a crucial role in controlling the fate of Hg in estuaries. A higher partition coefficient (logKd) of Hg was observed at the YRE compared to other estuaries, indicating that Hg(II) tends to be more adsorbed on SPM in this system. The adsorption kinetics of Hg(II) on SPM at both estuaries conformed to pseudosecond-order kinetics, while the adsorption isotherms at the XRE and YRE fitted well with the Langmuir model and Freundlich model, respectively, possibly due to the difference in SPM composition and properties. The logKd was significantly positively correlated with the adsorption capacity parameter kf at the YRE, indicating that the distribution of Hg(II) at the SPM-water interface is controlled by the adsorption of Hg(II) on SPM. The results of environmental parameter correlation analysis and adsorption-desorption experiments showed that SPM and organic matter are the key factors controlling Hg distribution and partitioning at the water-solid interface in estuaries." @default.
- W4380894168 created "2023-06-17" @default.
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- W4380894168 date "2023-10-01" @default.
- W4380894168 modified "2023-09-26" @default.
- W4380894168 title "Adsorption and environmental behavior of mercury on suspended particulate matter from the Yellow River and Xiaoqing River estuaries" @default.
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- W4380894168 doi "https://doi.org/10.1016/j.scitotenv.2023.164860" @default.
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