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RECORD NUMBER: 12 OF 19

OLS Field Name OLS Field Data
Main Title Nature and Stability of Complex Mercury Compounds in Surface and Ground Waters.
Author Lan, James E. ; Mountcastl, William R. ; Peter, Helen T. ;
CORP Author Auburn Univ., Ala. Water Resources Research Inst.
Year Published 1973
Report Number WRRI-Bull-17; OWRR-A-028-ALA; 02441,; A-028-ALA(1)
Stock Number PB-226 226
Additional Subjects Mercury organic compounds ; Metal complexes ; Inorganic phosphates ; Chemical equilibrium ; Stability ; Water pollution ; Ions ; Volumetric analysis ; Limnology ; Chemical reaction mechanisms ; Ion selective electrodes
Holdings
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Status
NTIS  PB-226 226 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 55p
Abstract
Attempts to determine the stability constants for the methylmercury phosphato and diphosphato complexes at 25C in an aqueous media and with an ionic strength of 0.10 M (with KNO3) through the use of electromotive force measurement and half-wave potentials from the dropping mercury electrode are described. A glass-nitrate selective ion electrode combination yielded reproducible and meaningful values when a solution of the ligand and methylmercury ion were titrated with standard nitric acid. Calculations of stability constants proved to be impossible since the quoted constants for the hydrolysis of the methylmercury cation are apparently in error, and corrective efforts are outlined. Reduction waves of the methylmercury chloride and hydroxide species in solution are presented and explained by postulated mechanisms involving free radical intermediates.