Formaldehyde Analysis in Non-Aqueous Methanol Solutions by Infrared Spectroscopy and Electrospray Ionization.

ABSTRACT: We present the analysis of formaldehyde (HCHO) in anhydrous methanol (CH₃OH) as a case study to quantify HCHO in non-aqueous samples. At higher concentrations (C > 0.07 M), we detect a product of HCHO, methoxy methanol (MM, CH₃OCH₂OH), by Fourier transform infrared spectroscopy, FTIR. Formaldehyde reacts with CH₃OH, CD₃OH, and CD₃OD as shown by FTIR with a characteristic spectral feature around 1,195 cm^-1 for CH₃OH used for the qualitative detection of MM, a formaldehyde derivative in neat methanol. Ab initio calculations support this assignment. The extinction coefficient for 1,195 cm^-1 is in the order of 1.4 × 10² M^-1cm^-1, which makes the detection limit by

SUBMITTER: Barakoti KK 

PROVIDER: S-EPMC8283199 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature