Simultaneous Determination of Nitrogen Dioxide and Ozone by Luminol Chemiluminescence Method

Abstract

By using a manganese dioxide tube for selective decomposition of ozone, nitrogen dioxide and ozone can be simultaneously determined by luminol chemiluminescence method. The activity of manganese dioxide for the decomposition of ozone is stable for more than one month. The detection limit for NO₂ and O₃ is estimated less than 1 ppb and the standard deviation for 5 measurements of NO₂ at 10 ppb and 0₃ at 100 ppb were 2.1% and 1.1%, respectively.