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Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 40:1411-1422
Two pulsed dye lasers pumped by an excimer laser are simultaneously directed into the analytical zone of an inductively coupled argon plasma. When the two beams are tuned to the appropriate ionic transitions, highly excited ionic levels can be effici
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 40:1637-1649
Using strontium atoms present as a trace constituent in an air-acetylene flame as an example, a rich laser enhanced ionization spectrum was obtained. One pulsed tunable dye laser was tuned to a transition originating from the ground state (460.73 nm)
Publikováno v:
Analytical Chemistry. 58:2147-2151
Excitation en une ou deux etapes, suivie d'une ionisation par collision. Le signal d'ionisation est enregistre simultanement au signal de fluorescence
Publikováno v:
Analytica Chimica Acta. 69:455-460
The silicon diode array vidicon camera tube and the nitrous oxide-- acetylene flame were used to determine limits of detection for Co, Cu, Er, Ev, Ho, In, Mn, Ni, Sc, Sr, and Yb. (LK)
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 41:1367-1380
Absolute number densities for the metastable and radiative 4s argon levels in an inductively coupled plasma have been determined for a variety of plasma conditions by the technique of continuum source absorption. As primary source, a 300 W xenon arc
Publikováno v:
Spectrochimica Acta Part A: Molecular Spectroscopy. 30:1459-1463
Publikováno v:
Applied Spectroscopy. 38:239-245
Rapid scanning constant energy synchronous fluorescence spectrometry (RSCESFS) is evaluated for flow cell design, scan speed, and constant energy interval choice. Analytical figures of merit for several polycyclic aromatic hydrocarbons (PAHs) are giv
Publikováno v:
Review of Scientific Instruments. 56:1199-1205
A rapid scanning fluorometer based on constant energy synchronous fluorescence scanning at 200 nm/s has been developed. Constant energy synchronous fluorescence spectrometry involves measurement of fluorescence as both excitation and emission monochr
Autor:
D. J. Johnson, R. Avni, F.W. Plankey, J.D. Winefordner, T. L. Chester, L.P. Hart, J. J. Fitzgerald
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 31:1-19
Four major types of spectroscopic systems for quantitative analysis of one or more spectral components we compared, with regard to signal-to-noise ratio for constant analysis time. These four methods are based on sequential-linear scan, sequential-sl