A New Type of Sleeve Type Ion Transfer Tube
An ion transfer tube and sleeve-type technology, which is applied in the direction of electron/ion optical devices, particle separator tube parts, etc., can solve unfavorable miniaturization and industrialization promotion, reduce the concentration of target compounds, and reduce detection sensitivity, etc. problems, to achieve high sensitivity and high recognition accuracy, easy to mass production, and improve the effect of recognition accuracy
Active Publication Date: 2020-04-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
The previous flat-plate structure devices only realized the detection of ions of a single polarity (electrophilic or protophilic)
In order to increase the detection speed and reduce the analysis time, the patent 200810229883.8 proposed a parallel and series combined high-field asymmetric waveform ion transfer tube, by setting two or more ground electrode sleeves; but due to the Splitting the sample will reduce the concentration of the target compound, resulting in a decrease in detection sensitivity
In addition, the array structure often requires multiple high-field asymmetric RF voltages and DC compensation power supplies, which is not conducive to miniaturization and industrialization promotion
Method used
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[0026] The schematic diagram of the sleeve-type high-field asymmetric wave ion transfer tube of the present invention is as follows figure 1 shown.
[0027] The sleeve-type ion transfer tube includes: a cylindrical insulating sleeve 9 with a closed left end and an open right end; Its axial direction is provided with a central electrode 4, the center electrode is covered with a cylindrical first separation electrode sleeve 3, the first separation electrode sleeve is covered with a cylindrical second separation electrode sleeve 2, and the center electrode 4 , the first separated electrode sleeve 3 and the second separated electrode sleeve 2 are mutually spaced and coaxially arranged, and the ion separation area composed of the center electrode, the first separated electrode sleeve and the second separated electrode sleeve 2 is used for ion separation An ionization source 1 is provided between the area and the injection port 8; a second detection electrode pair consisting of a p...
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The invention discloses a novel sleeve-type ion transfer tube, specifically a sleeve-type high-field asymmetric waveform ion transfer tube, which includes a sample inlet, an ionization area, a separation area, a detection area, etc., along the axial direction Arranged in order. The separation area is composed of two or more sleeve electrodes; the detection area is composed of two or more sleeve electrode pairs. By adjusting the distance between different sleeve electrodes, the simultaneous determination of multiple compounds can be realized at the same time; the spectral information of the same compound under different separation voltages can also be obtained to improve the identification accuracy. Each of the present invention can provide two or more detection channels at the same time, realize the simultaneous determination of two or more compounds, and shorten the detection cycle; use a single high-field asymmetrical radio frequency voltage and DC compensation power supply, no need for multiple A power supply, simple structure, small size, easy to process and industrial promotion.
Description
technical field [0001] The invention relates to atmospheric pressure separation and analysis technology, in particular to a novel sleeve-type ion transfer tube, which includes an ionization area, a separation area, a detection area, etc., arranged in sequence along the axial direction. The separation area is composed of a central electrode and two or more coaxial, parallel but non-coplanar sleeve electrodes; the detection area is composed of N cylindrical electrodes that are parallel to each other and insulated at the coaxial center. It consists of two or more detection electrode pairs. At least one of each pair of separated electrodes is a ground electrode, and at least one electrode is a high-voltage asymmetric field electrode. Each pair of detection electrodes applies a positive bias voltage to one electrode and a negative bias voltage to one electrode. The present invention can use the same asymmetric power supply to realize the simultaneous measurement of two or more co...
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IPC IPC(8): H01J49/02H01J49/06
Inventor 王卫国李海洋陈红黄卫
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI