NO_2検出器を用いた大気中NO測定システムの開発

概要

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We propose herein a new principle to measure atmospheric NO using an NO_2 detector. We tested this method to determine whether precise measurements are achievable or not when using a laser induced fluorescence detector for NO_2. To convert NO to NO_2, O_3 is added to the sample air. When adding O_3, not all of the NO is used in the generation of NO_2: some of the NO does not react with the O_3 and some of the formed NO_2 reacts with O_3. Using a box model we simulated the time evolution of the NO_2 concentration after the addition of the O_3. We found the optimum condition of reaction time and O_3 concentration by both calculation and experiment. To verify the usefulness of ambient air measurements using this technique, observations were conducted. NO concentrations obtained by this system were compared with those of the chemiluminescence technique and resulted in excellent agreement.
社団法人大気環境学会の論文
2008-03-10