Near-ultraviolet femtosecond laser ionization of dioxins in gas chromatography/time-of-flight mass spectrometry.
Gas chromatography/multiphoton ionization/time-of-flight mass spectrometry (GC/MPI/TOF-MS) was applied to the trace analysis of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs). To determine the optimum wavelength for analysis of PCDD/Fs, the wavelength of the femtosecond laser utilized for multiphoton ionization was converted to near-ultraviolet status using stimulated Raman scattering. A femtosecond laser emitting at 300 nm completely eliminated the background signal arising from the bleeding compounds generated from a stationary phase of the capillary column in GC.
Yamaguchi
Satoshi
S
Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Fukuoka, Japan.
Kira
Fumiaki
F
Miyoshi
Yuki
Y
Uchimura
Tomohiro
T
Watanabe-Ezoe
Yuka
Y
Zaitsu
Shin-ichi
S
Imasaka
Tomoko
T
Imasaka
Totaro
T
D000393:Air Pollutants / Q000032:analysis* / Q000737:chemistry; D001572:Benzofurans / Q000032:analysis / Q000737:chemistry; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins / Q000032:analysis* / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D007834:Lasers; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives / Q000032:analysis / Q000737:chemistry; D012680:Sensitivity and Specificity; D013059:Spectrum Analysis, Raman; D013696:Temperature; D013997:Time Factors; D014466:Ultraviolet Rays
D000393:Air Pollutants; D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D004147:Dioxins; D000072317:Polychlorinated Dibenzodioxins; C014211:2,3,7,8-tetrachlorodibenzofuran