気き中ちゅう濃のう度ど

noun

atmospheric concentration; airborne concentration

Technical term used in environmental science, occupational health, and engineering to denote the amount of a substance present in a given volume of air.

• 作さ業ぎょう環かん境きょうにおける有ゆう害がい物ぶっ質しつの気き中ちゅう濃のう度どを測そく定ていする。

  Measure the airborne concentration of hazardous substances in the work environment.

• この地ち域いきの二に酸さん化か炭たん素その気き中ちゅう濃のう度どは年ねん々ねん上じょう昇しょうしている。

  The atmospheric concentration of carbon dioxide in this area is rising year by year.