Radiometric determination of stability constants of mercury species complexes with L-cysteine

  • J. Starý
  • K. Kratzer


Liquid-liquid distribution method has been applied for the determination of the composition and stability constants of mercury species with L-cysteine /H2L/. In the pH range 2–8, mercury /II/ forms a complex Hg/HL/2 with very high stability constant /lg β2 = 40.0/, whereas methylmercury and phenylmercury form complexes CH3HgHL /lg β1 = 15.56/ and C6H5HgHL /lg β1 = 16.5/. At pH≥13, anionic complexes HgL 2 2− /lg β2 = 42.7/, CH3HgL /lg β1 = 16.58/ and lg β1 = 17.7 are formed.


Physical Chemistry Mercury Inorganic Chemistry Form Complex High Stability 
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Copyright information

© Akadémiai Kiadó 1988

Authors and Affiliations

  • J. Starý
    • 1
  • K. Kratzer
    • 1
  1. 1.Department of Nuclear ChemistryTechnical University of PraguePrague 1Czechoslovakia

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