A new method for atmospheric nitrogen dioxide measurements using the combination of a stripping coil and fluorescence detection. |
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| Authors: | Xinyu Chen Yoshiro Oro Kenta Tanaka Norimichi Takenaka Hiroshi Bandow |
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| Institution: | Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho, Sakai, Osaka, Japan. xinyu@ams.osakafu-u.ac.jp |
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| Abstract: | A new stripping coil for the collection of nitrogen dioxide (NO2) has been developed to increase its versatility and efficiency. Nitrogen dioxide measurements based on quantitative collection through a reaction coil into an alkaline solution has been examined. Nitrogen dioxide is collected in a 0.1 N NaOH solution. This collection system has an efficiency of nearly 100%. The absorbed nitrogen dioxide has been measured by fluorescence detection with sub-ppbv detection limits. The excitation wavelength at 360 nm and the produced emission wavelength at 405 nm were suitable for nitrite ion measurements. |
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