TY - JOUR
T1 - Enhancement of sensitivity of optogalvanic spectroscopy in a flame by laser ionization
AU - Oki, Yuji
AU - Kidera, Nobutaka
AU - Maeda, Mitsuo
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1994/8/1
Y1 - 1994/8/1
N2 - In usual optogalvanic spectroscopy in a flame, the signal is obtained by thermal ionization of selectively excited species. The optogalvanic signal in a flame was remarkably enhanced by selective multi-step photo-ionization, when an intense UV laser beam was applied into the flame. The enhancement factor exceeded 100 and a detection limit of 5 ppt (pg/ml) was obtained, when this technique was applied for tracing atomic Ca in water.
AB - In usual optogalvanic spectroscopy in a flame, the signal is obtained by thermal ionization of selectively excited species. The optogalvanic signal in a flame was remarkably enhanced by selective multi-step photo-ionization, when an intense UV laser beam was applied into the flame. The enhancement factor exceeded 100 and a detection limit of 5 ppt (pg/ml) was obtained, when this technique was applied for tracing atomic Ca in water.
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U2 - 10.1016/0030-4018(94)90179-1
DO - 10.1016/0030-4018(94)90179-1
M3 - Article
AN - SCOPUS:0028483326
VL - 110
SP - 105
EP - 108
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
IS - 1-2
ER -