Chemistry: analytical and immunological testing – Nuclear magnetic resonance – electron spin resonance or other...
Patent
1995-05-01
1997-10-28
Soderquist, Arlen
Chemistry: analytical and immunological testing
Nuclear magnetic resonance, electron spin resonance or other...
436183, 250281, 250282, 250286, 250287, 250288, 250289, G01N 2400
Patent
active
056817525
ABSTRACT:
The invention provides an improved mass spectrometer apparatus, and related method, that characterizes aerosol particles, in real time, according not only to their chemical composition, but also to their size. This added information can be of critical importance when evaluating risks associated with aerosol particles of particular chemical composition. The apparatus achieves this beneficial result in a reliable fashion by first detecting the presence and size of individual aerosol particles moving along a predetermined particle path and by then directing a pulse of high-intensity light at the particle, to desorb and ionize the particle, for analysis of its chemical composition.
REFERENCES:
patent: 3854321 (1974-12-01), Dahneke
patent: 4358302 (1982-11-01), Dahneke
B. Dahneke AICHE Symp. Ser. 1980, 76, 134-143.
J. Marijnissen et al. J. Aerosol Sci. 1988, 19, 1307-1310.
O. Kievit et al. J. Aerosol Sci. 1992, 23, Suppl. 1, 5301-5304.
J. Allen et al. Rev. Sci. Instrum. 1981, 52, 804-809.
J. Marijnissen et al. Chem. Abstr. 1989, 110, 100838n.
J. R. Fincke et al. Plasma Chem. Plasma Proc. 1993, 13, 579-600.
O. Kievit et al. Chem. Abstr. 1993, 119, 11368c.
K.A. Prather et al. Anal Chem. 1994, 66, 1403-1407.
T. Nordmeyer et al. Anal. Chem. 1994, 66, 3540-3542.
M. V. Johnston et al. Anal. Chem. 1995, 67, 721a-727a.
Sinha, M. P., "Laser-Induced Volatilization and Ionization of Microparticles," 1984 American Institute of Physics, Rev. Sci. Instrum. 55(6), Jun. 1984, pp. 886-891.
McKeown, P.J. et al., "On-Line Single-Particle Analysis by Laser Desorption Mass Spectrometry," Analytical Chemistry, vol. 63, No. 18, Sep. 15, 1991, pp. 2069-2073.
Brueggemann James R.
Soderquist Arlen
The Regents of the University of California
LandOfFree
Method and apparatus for determining the size and chemical compo does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for determining the size and chemical compo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the size and chemical compo will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1025696