Evaluation of a fibre optic device in solution equilibria studies. Application to 3-hydroxybenzoic acid ionization.
The use of a fibre optic device for spectrophotometric measurements in solution equilibria studies is presented. In particular the precision obtainable with such equipment is evaluated as a function of different experimental conditions, such as path length, averaging time and stirring of the solution. Analysis of 3-hydroxybenzoic acid ionization is presented to assess the results obtained in the study of an equilibrium system.
Crisponi
Guido
G
Centro Interdipartimentale per lo Studio dei Metalli in Medicina, Dipartimento di Scienze Chimiche, Università degli Studi di Cagliari, Cittadella Universitaria di Monserrato, 09042 Monserrato, Cagliari, Italy. crisponi@unica.it
Caredda
Alessandra
A
Cristiani
Franco
F
Diaz
Angelo
A
Nurchi
Valeria Marina
VM
Pinna
Rosalba
R
Pivetta
Tiziana
T
Silvagni
Roberta
R
D005336:Fiber Optic Technology; D062385:Hydroxybenzoates / Q000032:analysis / Q000737:chemistry*; D013053:Spectrophotometry / Q000379:methods
D062385:Hydroxybenzoates; C032948:3-hydroxybenzoic acid