Title:
PARTICLE MASS SPECTROMETER FOR DETECTING NANOPARTICLES AND METHOD
Document Type and Number:
WIPO Patent Application WO2005041244
Kind Code:
A3
Abstract:
Gas-borne particles are removed from an aerosol source by a multistage molecular beam system. In the high-vacuum part of the particle mass spectrometer, the particle beam flies through a deflection capacitor having a variable electric field. The part of charged particles is separated according to polarity and ratio of kinetic energy and charge. The charged particles reach the charge detector or charge detectors, Faraday cups for example, and respectively produce a current or voltage signal which is multiplied proportionally, in relation to the captured figure, by the charge figure. The particle speed is also measured such that the measuring data can be processed to form a mass spectrum. By assuming the simple charge per particle and the spherical shape, the mass spectrum can be converted into a size spectrum.
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Inventors:
BAUMANN WERNER (DE)
MAETZING HARTMUT (DE)
VAN RAAIJ ALEXANDER (DE)
HAUSER MANUELA (DE)
PAUR HANSS-RUDOLF (DE)
MAETZING HARTMUT (DE)
VAN RAAIJ ALEXANDER (DE)
HAUSER MANUELA (DE)
PAUR HANSS-RUDOLF (DE)
Application Number:
PCT/EP2004/007415
Publication Date:
September 29, 2005
Filing Date:
July 07, 2004
Export Citation:
Assignee:
KARLSRUHE FORSCHZENT (DE)
BAUMANN WERNER (DE)
MAETZING HARTMUT (DE)
VAN RAAIJ ALEXANDER (DE)
HAUSER MANUELA (DE)
PAUR HANSS-RUDOLF (DE)
BAUMANN WERNER (DE)
MAETZING HARTMUT (DE)
VAN RAAIJ ALEXANDER (DE)
HAUSER MANUELA (DE)
PAUR HANSS-RUDOLF (DE)
International Classes:
G01N15/02; H01J49/40; (IPC1-7): H01J49/40; G01N15/02
Foreign References:
| US5998215A | 1999-12-07 | |||
| US5091645A | 1992-02-25 |
Other References:
SEAPAN M. ET AL.: "Aerosol Characterization Using Molecular Beam Techniques", JOURNAL OF COLLOID AND INTERFACE SCIENCE, vol. 87, no. 1, 1982, pages 154 - 166, XP002335388
ROTH P. AND HOSPITAL A.: "Design and Test of a Particle Mass Spectrometer (PMS)", JOURNAL OF AEROSOL SCIENCE, vol. 25, no. 1, 1994, pages 61 - 73, XP009050132
ZIEMANN P J: "Particle mass and size measurement using mass spectrometry", TRAC, TRENDS IN ANALYTICAL CHEMISTRY, ANALYTICAL CHEMISTRY. CAMBRIDGE, GB, vol. 17, no. 6, 7 June 1998 (1998-06-07), pages 322 - 328, XP004125244, ISSN: 0165-9936
LINDACKERS D ET AL: "Synthesis of Al2O3 and SnO2 Particles by Oxidation of Metalorganic precursors in Premixed H2/O2/Ar Low Pressure Flames", NANOSTRUCTURED MATERIALS, ELSEVIER, NEW YORK, NY, US, vol. 10, no. 8, 1998, pages 1247 - 1270, XP004192651, ISSN: 0965-9773
MÄTZING H. ET AL: "Mass Spectrometer for Particles in the Nanometer Size Regime", JOURNAL OF AEROSOL SCIENCE, vol. 34, 2003, pages S277 - S278, XP002335488
ROTH P. AND HOSPITAL A.: "Design and Test of a Particle Mass Spectrometer (PMS)", JOURNAL OF AEROSOL SCIENCE, vol. 25, no. 1, 1994, pages 61 - 73, XP009050132
ZIEMANN P J: "Particle mass and size measurement using mass spectrometry", TRAC, TRENDS IN ANALYTICAL CHEMISTRY, ANALYTICAL CHEMISTRY. CAMBRIDGE, GB, vol. 17, no. 6, 7 June 1998 (1998-06-07), pages 322 - 328, XP004125244, ISSN: 0165-9936
LINDACKERS D ET AL: "Synthesis of Al2O3 and SnO2 Particles by Oxidation of Metalorganic precursors in Premixed H2/O2/Ar Low Pressure Flames", NANOSTRUCTURED MATERIALS, ELSEVIER, NEW YORK, NY, US, vol. 10, no. 8, 1998, pages 1247 - 1270, XP004192651, ISSN: 0965-9773
MÄTZING H. ET AL: "Mass Spectrometer for Particles in the Nanometer Size Regime", JOURNAL OF AEROSOL SCIENCE, vol. 34, 2003, pages S277 - S278, XP002335488
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