ChemInform Abstract: The Effect of Background on the Protonation of Pyridine: A Complex Formation Model.

Equilibrium studies in natural fluids: a chemical speciation model for the major constituents of sea water

“…This hypothesis is valid in the ranges of ionic strength, 0 ::;; /(mol L-1 )::;; I and temperature, 0::;; T( 0 C) ~ 45 (Daniele et al, 1985(Daniele et al, , 1991a. b) All the deviations from the predicted behaviour are to be attributed to weak complex formation between ligands and/or metals under study and the background salts (Casale et al, 1990;Daniele et al, 1985Daniele et al, , 1989Daniele et al, , 1991aDe Robertis et al, 1987b). Hypotheses a) and b) are based on the following third assumption.…”

“…Hypotheses a) and b) are based on the following third assumption. c) Tetraalkylammonium cations (E4N+, Me~+) do not form complexes with carboxylic ligands and some inorganic ligands (S04 2 -, P04 3 -, and their protonated species); Na+ and K+ do not form complexes with N-ligands (Abate et al, 1991;Casale et al, 1989Casale et al, , 1990Daniele et al, 1990aDaniele et al, , 1990bDaniele et al, , 1991bDeRobertis et al, 1991;De Stefano et al, 1988b;.…”