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 |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-226 226 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
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. |