Simple Ozone Scrubber Using a Glass Fiber Filter Impregnated with Hydroquinone for the Quantitative Analysis of Ambient Air Samples.

As a standard method for measuring the concentration of carbonyl compounds in air, 2,4-dinitrophenylhydrazine (DNPH) derivatization followed by high-performance liquid chromatography (HPLC) is widely used. However, the method is often plagued by interference issues related to the ozone content in ambient air samples. Although the use of a potassium iodide (KI) scrubber circumvents these problems, the combination of a DNPH-coated silica cartridge and KI scrubber often performs poorly, particularly in high humidity.