Fluorometric trace methanol detection in ethanol and isopropanol in a water medium for application in alcoholic beverages and hand sanitizers.

ABSTRACT: Detection of methanol (MeOH) in an ethanol (EtOH)/isopropanol ( ⁱ PrOH) medium containing water is crucial to recognize MeOH poisoning in alcoholic beverages and hand sanitizers. Although chemical sensing methods are very sensitive and easy to perform, the chemical similarities between the alcohols make MeOH detection very challenging particularly in the presence of water. Herein, the fluorometric detection of a trace amount of MeOH in EtOH/ ⁱ PrOH in the presence of water using alcohol coordinated Al(iii)-complexes of an aldehydic phenol ligand containing a dangling pyrazole unit is described. The presence of MeOH in the EtOH/ ⁱ PrOH causes a change of the complex geometry from tetrahedral (Td) to octahedral (Oh) due to the replacement

SUBMITTER: Roy S 

PROVIDER: S-EPMC9040838 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature