Radiant energy – Luminophor irradiation – With ultraviolet source
Reexamination Certificate
2008-06-03
2008-06-03
Porta, David (Department: 2884)
Radiant energy
Luminophor irradiation
With ultraviolet source
C250S458100, C250S459100
Reexamination Certificate
active
07381973
ABSTRACT:
A system for measuring the amount of sulfur in a sample is provided comprising a UV fluorescence detector for determining the sulfur dioxide content of the sample and an analyzer for receiving the sulfur dioxide content of the sample from the UV fluorescence detector for evaluating the content of species under investigation and for quantifying the sulfur content in the sample. The UV fluorescence detector comprising an excimer lamp comprising a quartz envelope and a krypton-chloride excimer gas mixture therein. The quartz envelope comprising the emission aperture substantially perpendicular to the longitudinal axis of the quartz envelope for transmitting photons there through, an inner electrode comprising a conductive solid metallic rod having effective contact with the interior cylindrical surface of the quartz envelope, and an outer electrode comprising a conductive solid metallic housing having effective contact between the outer electrode and the exterior cylindrical surface of the quartz envelope, such that the quartz envelope is bounded on the interior cylindrical surface by the inner electrode and on the exterior cylindrical surface by the outer electrode. Further, the outer electrode may comprise a first member and a second member symmetrically divided along the longitudinal axis of the quartz envelope, such that when the two members are joined together to encapsulate and hold the quartz envelope there between with an interior diameter closely coinciding with the outer diameter of the quartz envelope. In another embodiment of the present invention, a UV fluorescence method for determining the sulfur dioxide content of a sample is provided.
REFERENCES:
patent: 4469946 (1984-09-01), Tanaka et al.
patent: 4710679 (1987-12-01), Budinger et al.
patent: 4837484 (1989-06-01), Eliasson et al.
patent: 5504391 (1996-04-01), Turner et al.
patent: 5510158 (1996-04-01), Hiramoto
patent: 6133694 (2000-10-01), Cekic
patent: 6342702 (2002-01-01), Jinbo
patent: 6379024 (2002-04-01), Kogure
patent: 6407383 (2002-06-01), Byatt
patent: 6525472 (2003-02-01), Okugi
patent: 6734629 (2004-05-01), Arnold
patent: 6828568 (2004-12-01), Suzuki et al.
Okabe, H., Fluorescence & Predissociation of Sulfur Dioxide, Dec. 15, 1971, 7095-7096, 93:25 J. Am. Chem. Soc. Note Previously Submitted.
Okabe, H., Fluorescence Quenching of Sulfur Dioxide by Source Emission Gases, Sep. 1976, 487-1489, V.48, No. 11.
Schwarz, F.P., Okabe, H. & Whittaker, J.K., Fluorescence Detection of Sulfur Dioxide in Air at the Parts per Billion Level, Jul. 1974, 1024-1027, vol. 46, No. 8.
Bradshaw,J.D., Rodgers,M.O., and Davis,D.D., Single photon laser-induced fluorescence detection of NO and SO2 for atmospheric Conditions . . . , Jul. 15, 1982, 2493-2500, V.21, No. 14.
Mattee, H.D., Fluoresence & Phosphorescence of SO2 Vapor, Aug. 15, 1968, J.ChemPhy., vol. 49, No. 4.
Mohn, J. & L. Emmenegger, Determination of Sulfer Doixide by Pulsed UV-Fluorescence, 2001, Swiss Federal Laboritories for Materials Testing & Research.
Murray, J.R. & H.T. Powell, KrCl Laser Oscillation at 222nm, Aug. 15, 1976, Applied Phy. Letters, vol. 29, No. 4.
Uchino, Maeda & Hirono, Applications of Excimer Lasers to Laser-Radar Observations of the Upper Atmosphere, Oct. 1979, IEEE J.Quantum Elec., vol. QE-15, No. 10.
Kogelschatz, U., Fundamentials & Applications of Dielectric-Barrier Discharges, May 24, 2000, ABB Corporate Research Ltd., Baden, Switzerland.
Brashears, Setser & Yu, Emission Spectra of KrXeCl, KrXeBr, KrXel, ArKrF & ArKrCl, Jan. 1, 1981, J. Chem. Phys., vol. 74, No. 1.
Zhang & Boyd, Efficient excimer ultraviolet sources from a dielectric barrier discharge in rare-gas/halogen mixtures, Apr. 9, 1996, J. Appl. Phys., vol. 80, No. 2.
Kogelschatz, Ulrich, Silent discharges for the generation of ultraviolet & vacuum ultraviolet excimer radiation, 1990, Pure & Appld. Chem., vol. 62, No. 9.
Burgard, Dalton, et al., Nitrogen dioxide, sulfur dioxide, and ammonia detector for remote sensing of vehicle emissions, 2006, Rev. Sci. Instrum., vol. 77, p. 014101-1 to -5.
Kelly Chance, Ultraviolet & visible spectroscopy & spaceborne remote sensing of the Earth's atmosphere, 2005, R.C. Physique, vol. 6, pp. 836-847.
Harry V. Drushel, Trace Sulfer Determination in Petroleum Fractions, 1978, Analytical Chemistry, vol. 50, No. 1, pp. 76-81.
M.V. Erofeev, et al., Miniture KrCl & XeBr Excimer Lamps, 2003, J. Applied Spectroscopy, vol. 70, No. 5, pp. 807-810.
Xiangfen Feng, et al., Investigation of excimer ultraviolet sources from dielectric barrier discharge in krypton & halogen mixtures, 2006, Physica Scripta, vol. 74, pp. 322-325.
K.F. Greenough et al., The Fluorescence of Sulfur Dioxide, Feb. 5, 1961, vol. 83, pp. 555-560.
E. Hegazi et al., Fluorescence of Indirectly Excited Low Vibrational Levels of the 1A2 State of Sulfur Dioxide, 1994, J.Phys.Chem., vol. 98, pp. 12169-12175.
M. Heymann et al., UV Absorption Study of Collisional Energy Transfer In Vibrationally High Excited SO2 Molecules, 1988, J.Phys.Chem., vol. 92, pp. 5507-5514.
H. Hippler et al., Excitation Dependence of the Ultraviolet Absorption Spectrum of SO2, 1988, J.Phys.Chem., vol. 92, pp. 5503-5506.
U. Kogelschatz et al., High Intensity sources of ibcoherent UV &VUV excimer radiation for low-temperature materials processing, 2000, Applied Surface Sci., vol. 168, pp. 29-36.
J.P. Koplow et al., Development of a narrow-band, tunable, frequency-quadrupled diode laser for UV absorption spectroscopy, 1998, Applied Optice, vol. 37, No. 18, pp. 3954-3960.
D.C. Lorents et al., Optical emissions of triatomic rare gas halides, 1978, J.Phys.Chem., vol. 68, No. 10, pp. 4657-4661.
G.W. Luther III et al., Preface: Historical Background, 1997, J. Geophysical Research, vol. 102, No. D13, pp. 16,215-16,217.
R.A.Kishore Nadkarni, Determination of sulfur in petroleum products & lubricants: A critical review of test performance, 2000, American Laboratory, Nov., pp. 16,18,20,21-25.
T.N. Rao et al., The quenching reactions of the 1st excited singlet & triplet states of sulfur dioxide w/ O & CO2, 1969, J.Am.Chem.Soc., vol. 91, No. 7, p. 1616.
H.C.Brashears et al., Comm to the Editor, reactions of the Xe(3P1) & Kr(3P1) resonance states w/ halogen donor molecules, 1980, J.Phys.Chem., vol. 84, pp. 224-226.
J.H. Koltz et al., Reactive quenching studies of Xe(6s,3P2) metastable atoms by clorine containing molecules, 1979, J.Chem.Phys., vol. 71, No. 3, pp. 1247-1263.
J.E. Velazco et al., Rate constants and quenching mechanisms for the metastable states of argon, krypton and xenon, 1978, J.Chem.Phys., vol. 69, No. 10, pp. 4357-4371.
J.E. Velazco et al., Bound-free emission spectra of diatomic xenon halides, 1975, J.Chem.Phys., vol. 62, No. 5, pp. 1990-1991.
J.E. Velazco et al., Quenching rate constants for metastable argon, krypton, & xenon atoms by fluorine containing molecules . . . , 1976, J.Chem.Phys., vol. 65, No. 9, pp. 3468-3480.
Gaworecki Mark R
Payne Alton W.
Porta David
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