Trace gas measurement with an integrated porous tube collector/long-path absorbance detector - Dasgupta, Purnendu K.; Li, Jianzhong; Ohira, Shin-Ichi.; Toda, Kei.; Yoshioka, Ken-Ichi.
Keywords: Absorption spectrometry; Chemical sensor; Gas detector; Light emitting diode; Nitrogen dioxide; Ozone; Porous membrane; Trace analysis