Abstract: A gas adsorbing column filled with a filler composed of an adsorbent supported on a substrate having an average particle size or cross-sectional average diameter of 500 ?m to 1000 ?m, wherein the void volume of the column is 5 to 100 ?l.

Abstract: A gas adsorbing column filled with a filler composed of an adsorbent supported on a substrate having an average particle size or cross-sectional average diameter of 500 ?m to 1000 ?m, wherein the void volume of the column is 5 to 100 ?l.

Abstract: A sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger; and a sampling cartridge for a carbonyl compound in a gas wherein a sampling material for a carbonyl compound in a gas comprising a reagent capable of converting a carbonyl compound to a derivative thereof supported on a cation exchanger is packed in a column are provided. The sampling cartridge can be used for analyzing a carbonyl compound such as formaldehyde with ease and at a high sensitivity and high accuracy, and has excellent storage stability.