Data di Pubblicazione:
1987
Abstract:
A method for determining iodate and iodine in aqueous solutions is proposed. The assay is similar to a
previously described method for the determination of iodide and iodine, which were titrated with standard
iodate in hydrochloric acid solution. A sample solution made 0.5-1.5 M in hydrochloric acid is titrated with a
standard iodide solution and monitored spectrophotometrically at 230 nm. The species involved have strong
absorbances that are well differentiated at this wavelength. By combining the two titrations it is possible to
resolve any mixture of species of iodine in different oxidation states. The precision of the method (standard
deviation) is the same both when determining a single species (lO3-,I+ ,l2 or I-)a nd a mixture, and is equal to
2 exp -7 M. Chloride and bromide, even at very high concentrations, do not interfere.
previously described method for the determination of iodide and iodine, which were titrated with standard
iodate in hydrochloric acid solution. A sample solution made 0.5-1.5 M in hydrochloric acid is titrated with a
standard iodide solution and monitored spectrophotometrically at 230 nm. The species involved have strong
absorbances that are well differentiated at this wavelength. By combining the two titrations it is possible to
resolve any mixture of species of iodine in different oxidation states. The precision of the method (standard
deviation) is the same both when determining a single species (lO3-,I+ ,l2 or I-)a nd a mixture, and is equal to
2 exp -7 M. Chloride and bromide, even at very high concentrations, do not interfere.
Tipologia CRIS:
1.1 Articolo in rivista
Elenco autori:
Pesavento, Maria; Profumo, Antonella; Biesuz, Raffaela
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