Association of Elemental Mercury with Cyclodextrins in Aqueous Medium

Abstract

The complex formation of elemental mercury with α-, β-, and r-cyclodextrins (CDs) has b een studied in the excess of CD in aqueous medium at 25 °C. Solubility and volatilization methods were used to determine formation constants. The former method gave 4.5 dm^3⋅mol^-1and the latter 6 dm³mol^-1 for the 1: 1 (α-CD: Hg) complex formati on. Both methods did not show any complex formation of Hg with β- and γ-CDs.