Abstract
The geochemical behaviors of dissolved (< 0.4 μm), low molecular weight (< 10 kDa) and colloidal (10 kDa-0.4 μm) 210Po in surface waters from the Jiulongjiang estuary were examined and the input/removal rates of different 210Po species were estimated. Both dissolved and low molecular weight 210Po were considerably removed during estuarine mixing. However, colloidal 210Po was removed only at low salinity regions (S < 15) but had input behavior at high salinity surface waters (S > 15). The input/removal rates of three species indicate that 210Po was removed rapidly in the Jiulongjiang estuary. The discrepancy of input/removal rates between 210Po species suggests different geochemical behavior and a dynamic transformation between 210Po species. Low molecular weight 210Po may be more appropriate for characterizing the 210Po behavior in estuary zone than the traditional dissolved 210Po.
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Yang, W., Chen, M., Huang, Y. et al. The input/removal rates of size-fractionated 210Po in the Jiulongjiang estuary and its implications. Chin.Sci.Bull. 48, 2362–2365 (2003). https://doi.org/10.1360/03wd0172
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DOI: https://doi.org/10.1360/03wd0172