Title:
PARALLEL PLATE-TYPE NON-UNIFORM ELECTRIC FIELD ION MOBILITY SPECTROMETRY DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/143030
Kind Code:
A1
Abstract:
In the present invention, an ion separation space (15) between plate electrodes (11, 12) has disposed therein rod electrodes (16, 17) that are parallel to these electrodes and parallel to one another. An asymmetric pulse voltage is applied to the plate electrodes (11, 12), and a high electric field and low electric field are formed in alternation in the ion separation space (15). A voltage obtained by adding an appropriate direct current voltage to a voltage obtained by dividing the asymmetric pulse voltage with a resistance is applied to the rod electrodes (16, 17). At a given point in time, the outer margins of the rod electrodes (16, 17) will be at a predetermined potential, and therefore an electric field having a curved equipotential plane bulging out in the Y-axis direction is formed in the space between these electrodes. This electric field causes ions moving through a buffer gas flow to also be subject to forces of convergence in the X-axis direction and Y-axis direction while traveling in a zigzag. Due to this configuration, ions of different mobility ratios can be separated into layers by mobility ratio, each converging into an ion flow that is then emitted from the ion separation space (15). As a result, the ion permeability and separation performance are both improved.
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Inventors:
WOLLNIK HERMANN (DE)
Application Number:
PCT/JP2015/056814
Publication Date:
September 15, 2016
Filing Date:
March 09, 2015
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
G01N27/62
Domestic Patent References:
| WO2014006698A1 | 2014-01-09 |
Foreign References:
| US20040149902A1 | 2004-08-05 |
Other References:
KOICHI IINUMA: "Recent Study on Transport Coefficients of Ions in Gases", THE TRANSACTIONS OF THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN A, vol. 121, no. 5, 1 May 2001 (2001-05-01), pages 406 - 409, XP055416625
ROGER GUEVREMONT: "High-field asymmetric waveform ion mobility spectrometry: A new tool for mass spectrometry", JOURNAL OF CHROMATOGRAPHY A, vol. 1058, no. 1-2, 26 November 2004 (2004-11-26), pages 3 - 19, XP004638461
ROGER GUEVREMONT: "High-field asymmetric waveform ion mobility spectrometry: A new tool for mass spectrometry", JOURNAL OF CHROMATOGRAPHY A, vol. 1058, no. 1-2, 26 November 2004 (2004-11-26), pages 3 - 19, XP004638461
Attorney, Agent or Firm:
Kyoto International Patent Law Office (JP)
Patent business corporation Kyoto international patent firm (JP)
Patent business corporation Kyoto international patent firm (JP)
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