Tracer diffusion coefficients obtained from the Taylor dispersion technique at 25.0 °C were measured to study the influence of sodium, ammonium and magnesium salts at 0.01 and 0.1 mol dm-3 on the transport behavior of sodium hyaluronate (NaHy, 0.1%). The selection of these salts was based on their position in Hofmeister series, which describe the specific influence of different ions (cations and anions) on some physicochemical properties of a system that can be interpreted as a salting-in or salting-out effect. In our case, in general, an increase in the ionic strength (i.e., concentrations at 0.01 mol dm-3) led to a significant decrease in the limiting diffusion coefficient of the NaHy 0.1%, indicating, in those circumstances, the presence of salting-in effects. However, the opposite effect (salting-out) was verified with the increase in concentration of some salts, mainly for NH4SCN at 0.1 mol dm-3. In this particular salt, the cation is weakly hydrated and, consequently, its presence does not favor interactions between NaHy and water molecules, promoting, in those circumstances, less resistance to the movement of NaHy and thus to the increase of its diffusion (19%). These data, complemented by viscosity measurements, permit us to have a better understanding about the effect of these salts on the transport behaviour of NaHy.

• Klíčová slova
• Hofmeister series, sodium hyaluronate, transport properties, viscosity,
• MeSH
• anionty chemie   MeSH
• biologický transport MeSH
• chlorid lithný chemie   MeSH
• chlorid sodný chemie   MeSH
• difuze MeSH
• kationty chemie   MeSH
• kyselina hyaluronová chemie   MeSH
• osmolární koncentrace MeSH
• roztoky MeSH
• síran amonný chemie   MeSH
• síran hořečnatý chemie   MeSH
• sírany chemie   MeSH
• soli chemie   MeSH
• teplota MeSH
• thiokyanatany chemie   MeSH
• viskozita MeSH
• voda chemie   MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• anionty MeSH
• chlorid lithný MeSH
• chlorid sodný MeSH
• kationty MeSH
• kyselina hyaluronová MeSH
• roztoky MeSH
• síran amonný MeSH
• síran hořečnatý MeSH
• sírany MeSH
• sodium sulfate MeSH Prohlížeč
• sodium thiocyanate MeSH Prohlížeč
• soli MeSH
• thiocyanic acid MeSH Prohlížeč
• thiokyanatany MeSH
• voda MeSH