concentration mg/m3을 ppm 으로 변환

concentration (ppm) = 24.45 x concentration (mg/m3) ÷ molecular weight (g/mol)

 

예시) 50mg/m3 의 암모니아는 몇 ppm 인가요?

 

24.45 × 50 mg/m3 ÷ 17.03 g/mol (molecula weight) = 71.785 ppm