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Ion mobility spectrometer chamber

An ion migration and spectrometer technology, applied in the field of devices for detecting chemical pollution, can solve problems such as the inability to ensure airflow temperature stability

Inactive Publication Date: 2014-01-22
化学及放射性测量军事研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The construction of closed chambers such as glass systems is known, allowing a high degree of purity inside the chamber, but unfortunately such systems do not ensure proper temperature stability of the gas flow

Method used

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Embodiment Construction

[0014] The spectrometer cavity with inlet 1 and outlet 2 for the analysis gas is composed of 4 ceramic plates, the top plate 3 and the bottom plate 4 and two plates 5 and 6 with gaps to ensure the air tightness of the cavity and the gap between the top and bottom plates. The distance is fixed. The ceramic plate is made of 96% Al2O3. The thickness of the top and bottom plates is 1 / 40", and the thickness of the board with voids is 1 / 100". On the outer surface of each of the ceramic plates of the top plate 3 and the bottom plate 4, there is a thermal resistor 7 and a temperature sensor 8. The thermal resistor 7 is made of a ruthenium dioxide layer attached to the ceramic plate to form a resistance layer. The above resistor has an electronic board and amplifier 9.

[0015] On the inner surface of each of the ceramic plates of the top plate 3 and the bottom plate 4, sequentially, starting from the gas port: ionization electrode 10, HV electrode 11 and collecting electrode 12, the io...

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Abstract

The invention concerns a FAIMS ion mobility spectrometer chamber, characterized by a high repeatability of dimensions, permitting stable gas flow, mechanical rigidity, excellent thermal conductivity and high temperature stability of gas flow. The essence of the chamber is that the heating resistor (7), the ionizer electrodes (10), the HV detector electrodes (11) and the collecting electrodes (12), as well as the conducting contacts (13, 14, 15), are applied in the form of layers of precious metals on ceramic plates (3, 4). The heating resistor (7) is located on the outer surface of the top (3) and bottom (4) ceramic plate in the form of a resistive layer of ruthenium dioxide. On the inner surface of each of the top (3) and bottom (4) ceramic plates, sequentially, starting from the gas inlet (1) to the chamber, there are gas ionizer electrodes (10) in the form of a layer of radioactive nickel, HV electrodes (11) and collecting electrodes (12), in the form of layers of gold. The conducting contacts (13, 14, 15) are made of a palladium-silver layer, whereas on the edge surfaces of the ceramic plates there are edge contacts (16), which are made of silver paste.

Description

Technical field [0001] The invention relates to a field asymmetric ion mobility spectrometer cavity and a device for detecting chemical pollution. Background technique [0002] Existing spectral scanners detect and identify most organic substances as highly toxic. Currently, the detection of highly toxic chemical substances (chemical weapons and highly toxic industrial raw materials) is carried out by a detector based on IMS (Ion Mobility Spectrometer). These traditional spectrometers work at a temperature of 50°C and have high sensitivity, but their resolution is not high, leading to false alarms in actual use. After detecting chemical contamination, the indicator generates an alarm signal, for example, activates a buzzer and light, or sends a signal to activate a user-defined device, like a ventilation device or an alarm system. The lower the number of false alarms, the better, because it will weaken the credibility of the pollution detection system and may lead to unnecessar...

Claims

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Application Information

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IPC IPC(8): G01N27/62
CPCG01N27/624
Inventor 玛尔格泽塔·亚库波夫斯卡韦斯特夫·格蕾维斯迈克尔·赛雷穆加米洛斯拉夫·玛兹尔朱克
Owner 化学及放射性测量军事研究院
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