In situ amperometric detection of vesicles and microgel phases in an aggregating system: Calcium alginate (CROSBI ID 131158)
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Podaci o odgovornosti
Ivošević DeNardis, Nadica ; Žutić, Vera ; Svetličić, Vesna ; Urbani, Ranieri
engleski
In situ amperometric detection of vesicles and microgel phases in an aggregating system: Calcium alginate
In situ amperometric characterization of an aggregating system in terms of molecular adsorption and single microparticle interactions at the electrode interface is demonstrated using a model system: alginate/Ca(II) in an aqueous electrolyte solution. Recording of chronoamperometric curves of oxygen reduction at the dropping mercury electrode is designed for detection of dip-shaped signals of individual gel microparticles. By addition of Ca(II) decrease of alginate adsorption is accompanied by appearance of signals indicating vesicle type association of alginate molecules and microparticles of gel phase. AFM imaging provided evidence of initial stage in calcium alginate gel formation.
amperometric detection; calcium alginate; dropping mercury electrode; gel microparticles; vesicles
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