Analysis of Gas-Phase Formaldehyde by GC-FID Method Utilizing DNPH Derivatization

Introduction

Formaldehyde has the simplest structure among the aldehydes but is known to be a harmful air pollutant. Accordingly, various pretreatment processes for trace analysis of the compound have been proposed and established in the past (Application News No. G292, L476). Flame Ionization Detector (FID) is among the most general detectors used in Gas Chromatography (GC). While FID does not have sensitivity for formaldehyde, it does for DNPH (2,4-dinitrophenylhydrazine)-derivatized formaldehyde. This article examined the quantitation of formaldehyde in gas-phase by GC-FID utilizing DNPH derivatization.

June 25, 2023 GMT