Title :
Fluorometric bio-sniffer (biochemical gas sensor) with UV-LED light for fomaldehyde vapor as VOC (volatile organic chemical)
Author :
Gessei, Tomoko ; Itabashi, Gen ; Suzuki, Yuki ; Takahashi, Daishi ; Arakawa, Takahiro ; Kudo, Hiroyuki ; Mitsubayashi, Kohji
Author_Institution :
Grad. Sch. of Med. & Dental Sci., Tokyo Med. & Dental Univ., Tokyo, Japan
Abstract :
A fibre-optic biochemical gas sensor (bio-sniffer) for gaseous formaldehyde (FA) was developed and applied for on-site assessment of FA detoxification. The bio-sniffer measures FA as a fluorescence of reduced nicoti-namide adenine dinucleotide (NADH) which is the product of formaldehyde dehydrogenase reaction. The detection limit of the bio-sniffer for gaseous FA was 2.5 ppb, which is enough lower for the purpose of evaluating FA detoxification. The bio-sniffer was then applied to measure phytoremediation with N. E. “Bostoniensis”. The FA level in the measurement chamber decreased down to the detection limit (2.5 ppb), which is lower level than FA level of room air (12 ppb), within 95 min and the value increased to FA level when the chamber was vented.
Keywords :
biological techniques; fibre optic sensors; fluorescence; gas sensors; light emitting diodes; organic compounds; UV LED light; biochemical gas sensor; detoxification; fibre optic sensor; fluorescence; fluorometric biosniffer; fomaldehyde vapor; formaldehyde dehydrogenase reaction; nicotinamide adenine dinucleotide; phytoremediation; volatile organic chemical; Calibration; Cancer; Dentistry; Fluorescence; Gas detectors; Monitoring; Probes;
Conference_Titel :
Optical MEMS and Nanophotonics (OPT MEMS), 2010 International Conference on
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-8926-8
Electronic_ISBN :
978-1-4244-8925-1
DOI :
10.1109/OMEMS.2010.5672172
