title: Evaluation of a fibre optic device in solution equilibria studies. Application to 3-hydroxybenzoic acid ionization.
abstract: 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.
authors.affiliation: 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
authors.forename: Guido
authors.initials: G
authors.lastname: Crisponi
authors.forename: Alessandra
authors.initials: A
authors.lastname: Caredda
authors.forename: Franco
authors.initials: F
authors.lastname: Cristiani
authors.forename: Angelo
authors.initials: A
authors.lastname: Diaz
authors.forename: Valeria Marina
authors.initials: VM
authors.lastname: Nurchi
authors.forename: Rosalba
authors.initials: R
authors.lastname: Pinna
authors.forename: Tiziana
authors.initials: T
authors.lastname: Pivetta
authors.forename: Roberta
authors.initials: R
authors.lastname: Silvagni
mesh_terms: D005336:Fiber Optic Technology; D062385:Hydroxybenzoates / Q000032:analysis / Q000737:chemistry*; D013053:Spectrophotometry / Q000379:methods
chemical_list: D062385:Hydroxybenzoates; C032948:3-hydroxybenzoic acid