Abstract
Mercury (II) solutions were irradiated by a simulated sunlight in the presence of humic acid (HA) or fulvic acid (FA). Results show that, under the experimental conditions and the FA and HA chosen, less than 20% of the Hg in solution was photolysed with a rate of (1.63±0.29)×10−2 s−1 (n=23) and the rest of (2.38±0.40)×10−4 s−1 (n=23) depending on the substitutes of humic substances to which Hg were bond. The sunlight photolysis lifetimes were estimated to be 4 and 250 sunlight hours respectively under summer conditions at Stockholm latitude.
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Xiao, Z.F., Strömberg, D. & Lindqvist, O. Influence of humic substances on photolysis of divalent mercury in aqueous solution. Water Air Soil Pollut 80, 789–798 (1995). https://doi.org/10.1007/BF01189730
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DOI: https://doi.org/10.1007/BF01189730