PROBLEM TO BE SOLVED: To collect a small amount of specific gas constituent contained in expiration and accurately measure the concentration of the gas constituent.SOLUTION: This expiration measuring device 20 includes a body section 14, an upper lid 16, a fan 22, and a sensor section 100. In an opening state of the upper lid 16, an expiration collection tube 40 is mounted to the body section 14. The expiration collection tube 40 includes a permselective membrane 54 and permselective membrane 56 for selectively passing only the specific gas constituent in the expiration, and an adsorption material 58. A cooling cover is mounted to the outer periphery of the expiration collection tube 40 during expiration collection. The sensor section 100 includes an expiration sensor surface-modified with a material corresponding to the specific gas constituent adsorbed by the adsorption material 58 of the expiration collection tube 40.COPYRIGHT: (C)2010,JPO&INPIT【課題】呼気中に少量含まれる特定のガス成分を容易に捕集するとともに、そのガス成分の濃度を精度高く測定する。【解決手段】呼気測定装置20は、本体部14と上蓋16とファン22とセンサ部100とを含む。上蓋16を開けた状態で、本体部14に呼気収集管40が装着される。呼気収集管40は、呼気中の特定ガス成分のみを選択的に透過する選択透過膜54及び選択透過膜56と、吸着材58とを含む。呼気収集中には呼気収集管40の外周に冷却カバーが装着される。センサ部100は、呼気収集管40の吸着材58に吸着された特定ガス成分に対応した物質で表面修飾された呼気センサを備える。【選択図】図5
