Ion Mobility Spectrometer for Rapid Simultaneous Detection of Positive and Negative Ions

Vasilyev, V.; Першенков, В.С.; Belyakov, V.V.; Samotaev, Nikolay; Головин, А. В.; Malkin, E.; Gromov, E.; Иванов, И. А.; Matusko, M.; Иванова, А. В.; Lipatov, D.

doi:10.1007/978-981-287-736-9_121

Cited by 5 publications

(2 citation statements)

References 11 publications

(6 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the IMS method, many portable devices, such as CAM and its modified versions, and transportable devices, such as GID-2, GID-3, and ALERT, for contamination detection, have been designed and commissioned. The working principle is shown in Figure 3 [ 19 , 20 ].…”

Section: Methodsmentioning

confidence: 99%

Air Pollution and Radiation Monitoring in Collective Protection Facilities

Kołacz

Wiśnik-Sawka

Maziejuk

et al. 2023

Sensors

View full text Add to dashboard Cite

It has become increasingly important to monitor environment contamination by such chemicals as chemical warfare agents (CWAs) and industrial toxic chemicals (TICs), as well as radiation hazards around and inside collective protection facilities. This is especially important given the increased risk of terrorist or military attacks. The Military Institute of Chemistry and Radiometry (MICR) has constructed and developed the ALERT device for the effective monitoring of these threats. This device uses sensors that detect chemical and radiological contaminations in the air. The CWA detector is an ion mobility spectrometer, TICs are detected by electrochemical sensors, and radiation hazards are detected via Geiger–Muller tubes. The system was designed to protect the crew from contamination. When chemical or radioactive contamination is detected at the air inlet for the shelter, air filtration through a carbon filter is activated. At this time, the air test procedure at the filter outlet is started to test the condition of the filter on an ongoing basis. After detecting contamination at the filter outlet, the system turns off the air pumping and the service can start the procedure of replacing the damaged carbon filter. This paper presents the results of laboratory testing of the ALERT gas alarm detector, which showed high measurements for important parameters, including sensitivity, repeatability, accuracy, and speed.

show abstract

Section: Methodsmentioning

confidence: 99%

Air Pollution and Radiation Monitoring in Collective Protection Facilities

Kołacz

Wiśnik-Sawka

Maziejuk

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Another method employs a double drift tube with a common reaction region to detect positive and negative ions, respectively. The double drift tube method does not split the sample, but still requires two drift tubes and two sets of control electronics. , Recently introduced fast polarity switching IMS switches the drift voltage polarity on a single drift tube and collects positive and negative ion signals alternately. ,, Among them, fast polarity switching IMS are favored by the researchers for its simple structure, low power consumption, cost and potential for miniaturization …”

Section: Introductionmentioning

confidence: 99%

Implementing of Fourier Deconvolution Multiplexing to Fast Polarity Switching Miniaturized Ion Mobility Spectrometer

Yang,

Ye,

et al. 2024

Anal. Chem.

View full text Add to dashboard Cite

Ion mobility spectrometry (IMS) is a reliable and sensitive technique for the detection and analysis of compounds at the trace level. Depending on the chemical composition of the sample, compounds may be positively or negatively charged to form different polarity ions and detected in positive or negative polarity of the electric field. In order to detect multiple threats simultaneously with miniaturized devices, using a single detection unit to achieve high resolving power and high sensitivity is important. In this work, a miniaturized drift tube with fast polarity switching capabilities integrated with Fourier deconvolution multiplexing techniques is proposed for the first time as a means to improve the performance of ion mobility spectrometry. The sensitivity and resolving power are improved compared to traditional polarity switching signal averaging data acquisition methods. The displayed device had a high resolving power up to 52 at a drift length of 41 mm and a drift tube voltage of 2 kV. Trinitrotoluene (TNT), methamphetamine (MA), benzene, toluene, methyl tert-butyl ether (MTBE), acetic acid, and methylene chloride were evaluated using the proposed fast polarity switching multiplexing spectrometer and exhibited satisfied performance.

show abstract