The tendency of dimethylsulfide (DMS) to form complexes with heavy metal ions in aqueous solutions and the factors that influence it have been investigated. Among five heavy metal ions examined (Cu2+, Cd2+, Zn2+, Pb2+ and Hg2+), only Hg2+ bound significantly with DMS in aqueous solutions in which Hg2+ concentration was increased to much higher levels than that of natural seawater. The complexation capacity of Hg2+ for DMS was influenced by pH and media. The affinity of Hg2+ for DMS was generally lower at high than at low pH, presumably due to the competition of hydroxide ion to form hydroxomercury species. In different solutions, the affinity of Hg2+ for DMS followed the following sequence: ultra-purified water > 35‰ NaCl solution > seawater. It seems apparent that chloride had a negative impact on the complexation of DMS by Hg2+, owing to the competition of chloride with DMS for complexing Hg2+. In addition, the affinity of Hg2+ for DMS in the bulk seawater appeared to be higher than that in the surface microlayer seawater. The tendency of Hg2+ to form complexes with DMS in aqueous solution can be reduced by the presence of 2 mM amino-acid such as glycine, alanine, serine and cysteine, as these ligands give stable mercury complexes. However, the presence of 2 mM acetate in experimental solutions had no significant effect on the complexation of Hg2+ with DMS, even though this ligand has a relatively strong complexing capacity for Hg2+. Although mercury ions appeared to have a strong affinity for DMS, the concentration of mercury in seawater is too low to produce a great effect on the distribution of DMS in oceans.
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Allard, B. and I. Arsenie (1991): Abiotic reduction of mercury by humic substances in aquatic system-an important process for the mercury cycle. Water Air Soil Pollut., 56, 457–464.
Andreae, M. O. (1990): Ocean-atmosphere interactions in the global biogeochemical sulfur cycle. Mar. Chem., 30, 1–29.
Aranami, K., S. Watanabe, S. Tsunogai, M. Hayashi, K. Furuya and T. Nagata (2001): Biogeochemical variation in dimethylsulfide, phytoplankton pigments and heterotrophic bacterial production in the subarctic North Pacific during summer. J. Oceanogr., 57, 315–322.
Brimblecombe, P. and D. Shooter (1986): Photo-oxidation of dimethylsulphide in aqueous solution. Mar. Chem., 19, 343–353.
Brugger, A., D. Slezak, I. Obernosterer and G. J. Herndl (1998): Photolysis of dimethylsulfide in the northern Adriatic Sea: Dependence on substrate concentration, irradiance and DOC concentration. Mar. Chem., 59, 321–331.
Buffle, J. (1988): Complexation Reactions in Aquatic Systems: An Analytical Approach. Halsted Press, Chichester, 692 pp.
Dacey, J. W. H., F. A. Howse, A. F. Michaels and S. G. Wakeham (1998): Temporal variability of dimethylsulfide and dimethylsulfoniopropionate in the Sargasso Sea. Deep-Sea Res. I, 45, 2085–2104.
Dyrssen, D. and M. Wedborg (1991): The sulphur-mercury(II) system in natural waters. Water Air Soil Pollut., 56, 507–519.
Gill, G. A. and W. F. Fitzgerald (1987): Mercury in surface waters of the open ocean. Global Biogeochem. Cycles, 1, 199–212.
Guentzel, J. L., R. T. Powell, W. M. Landing and R. P. Mason (1996): Mercury associated with colloidal material in an estuarine and an open-ocean environment. Mar. Chem., 55, 177–188.
Kieber, D. J., J. Jiao, R. P. Kiene and T. S. Bates (1996): Impact of dimethylsulfide photochemistry on methyl sulfur cycling in the equatorial Pacific Ocean. J. Geophys. Res., 101, 3715–3722.
Kiene, R. P. and T. S. Bates (1990): Biological removal of dimethylsulphide from seawater. Nature, 345, 702–705.
Kiene, R. P. and L. J. Linn (2000): Distribution and turnover of dissolved DMSP and its relationship with bacterial production and dimethylsulfide in the Gulf of Mexico. Liminol. Oceanogr., 45, 849–861.
Liss, P. S. and R. A. Duce (eds.) (1997): The Sea Surface and Global Change. Cambridge University Press, Cambridge, 519 pp.
Lockwood, R. A. and K. Y. Chen (1973): Adsorption of Hg(II) by hydrous manganese oxides. Environ. Sci. Technol., 7, 1028–1034.
McAllan, D. T., T. V. Cullum, R. A. Dean and F. A. Fidler (1951): The preparation and properties of sulfur compounds related to petroleum. I. The dialkyl sulfides and disulfides. J. Amer. Chem. Soc., 73, 2627–2633.
Mierle, G. and R. Ingram (1991): The role of humic substances in the mobilization of mercury from watersheds. Water Air Soil Pollut., 56, 349–357.
Moffet, J. W. and R. G. Zika (1987): Photochemistry of copper complexes in seawater. Mar. Chem., 21, 301–309.
Nguyen, B. C., A. Gaudry, B. Bonsang and G. Lambert (1978): Reevaluation of the role of dimethyl sulfide in the sulphur budget. Nature, 275, 637–639.
Nriagu, J. O. (1979): The Biogeochemistry of Mercury in the Environment (Topics in Environmental Health). Elsevier/ North-Holland Biomedical Press, Amsterdam/New York/Oxford, 696 pp.
Schuster, E. (1991): The behavior of mercury in the soil with special emphasis on complexation and adsorption processes —a review of the literature. Water Air Soil Pollut., 56, 667–680.
Shine, J. P. and G. T. Wallace (1996): Flux of surface-active organic complexes of copper to the air-sea interface in coastal marine waters. J. Geophys. Res., 101, 12017–12026.
Shooter, D. and P. Brimblecombe (1989): Dimethylsulphide oxidation in the ocean. Deep-Sea Res., 36, 577–585.
Sillén, L. G. and A. E. Martell (eds.) (1971): Stability Constant of Metal-Ion Complexes. Special Publication No. 25, The Chemical Society, Burlington House, London, 865 pp.
Simó, R. and C. Pedrós-Alió (1999): Short-term variability in the open ocean cycle of dimethylsulfide. Global Biogeochem. Cycles, 13, 1173–1181.
Stumm, W. and J. J. Morgan (1996): Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters. 3rd ed., John Wiley & Sons, Inc., New York, 1022 pp.
Turner, S. M., G. Malin, P. D. Nightinggale and P. S. Liss (1996): Seasonal variation of dimethyl sulphide in the North Sea and an assessment of fluxes to the atmosphere. Mar. Chem., 54, 245–262.
Uzuka, N., S. Watanabe and S. Tsunogai (1996): Dimethylsulfide in coastal zone of the East China Sea. J. Oceanogr., 52, 313–321.
Van den Berg, C. M. G. and J. R. Donat (1992): Determination and data evaluation of copper complexation by organic ligands in sea water using cathodic stripping voltammetry at varying detection windows. Anal. Chim. Acta, 257, 281–291.
Wagner, C., Jr., S. M. Lusty, H.-F. Kung and N. L. Rogers (1967): Preparation and properties of trimethylsulfonium tetrahydrofolate methyltransferase. J. Biol. Chem., 242, 1287–1293.
Watras, C. J., K. A. Morrison and N. S. Bloom (1995): Chemical correlates of Hg and methyl-Hg in northern Wisconsin lake waters under ice-cover. Water Air Soil Pollut., 84, 253–267.
Yang, G.-P. (1996): Studies on biogeochemistry of dimethylsulfide and other organic sulfur compounds in the East China Sea and South China Sea. Ph.D. Thesis, Ocean University of Qingdao, Qingdao, 208 pp.
Yang, G.-P. (1999): Dimethylsulfide enrichment in the surface microlayer of the South China Sea. Mar. Chem., 66, 215–224.
Yang, G.-P. and S. Tsunogai (2005): Biogeochemistry of DMS and DMSP in the surface microlayer of the western North Pacific. Deep-Sea Res. I., 52(4), 553–567.
Yang, G.-P., X.-T. Liu, L. Li and Z.-B. Zhang (1999): Biogeochemistry of dimethylsulfide in the South China Sea. J. Mar. Res., 57, 189–211.
Yang, G.-P., S. Watanabe and S. Tsunogai (2001): Distribution and cycling of dimethylsulfide in surface microlayer and subsurface seawater. Mar. Chem., 76, 137–153.
Yang, G.-P., S. Tsunogai and S. Watanabe (2005a): Biogeochemistry of DMSP in the surface microlayer and subsurface seawater of Funka Bay, Japan. J. Oceanogr., 61(1), 69–78.
Yang, G.-P., S. Tsunogai and S. Watanabe (2005b): Biogenic sulfur distribution and cycling in the surface microlayer and subsurface water of Funka Bay and its adjacent area. Cont. Shelf Res., 25(4), 557–570.
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Yang, GP., Tsunogai, S. & Watanabe, S. Complexation of dimethylsulfide with mercuric ion in aqueous solutions. J Oceanogr 62, 473–480 (2006). https://doi.org/10.1007/s10872-006-0069-z