Silica Xerogel Doped with Iron(III) as Sensor Material for Salicylhydroxamic Acid Determination in Urine.

ABSTRACT: Salicylhydroxamic acid (SHA) is used as antimicrobic medicine and its concentration has to be monitored in urine. For the first time, silica xerogels doped with iron(III) have been proposed as sensor materials for SHA determination in biological samples. Three xerogels with iron(III) content in the range of 0.04-1.74% wt have been synthesized. BET surface area of these xerogels has varied in the range of 696-529 m2/g and total pore volume has varied in the range of 0.92-0.23 cm3/g. Complex formation between immobilized iron(III) and salicylhydroxamic acid has been investigated with solid phase spectrophotometry and IR spectroscopy. Orange-brown iron(III)-SHA complex with 1:1 stoichiometry is formed at pH 1-4 with half-reaction time of 17 min. Silica xerogel doped with 0.33% wt iron(III)) h

SUBMITTER: Morosanova MA 

PROVIDER: S-EPMC8482224 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature