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.
Chen
Xinyu
X
Department of Applied Materials Science, Graduate School of Engineering, Osaka Prefecture University, Gakuen-cho, Sakai, Osaka, Japan. xinyu@ams.osakafu-u.ac.jp
Oro
Yoshiro
Y
Tanaka
Kenta
K
Takenaka
Norimichi
N
Bandow
Hiroshi
H