A new method for atmospheric nitrogen dioxide measurements using the combination of a stripping coil and fluorescence detection.
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.
Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho, Sakai, Osaka, Japan. xinyu@ams.osakafu-u.ac.jp
Xinyu
X
Chen
Yoshiro
Y
Oro
Kenta
K
Tanaka
Norimichi
N
Takenaka
Hiroshi
H
Bandow