Contemporary ion mobility spectrometry applications and future trends towards environmental, health and food research: A review

Moura, Pedro Catalão; Vassilenko, Valentina

doi:10.1016/j.ijms.2023.117012

Cited by 29 publications

(25 citation statements)

References 141 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Micro-electromechanical systems (MEMS) are devices or systems that combine microstructures, micro transducers, and micro-actuators with signal processing and control circuits [43]. Nowadays, these are commonly found in smartphones and laptops.…”

Section: Seismic Monitoring Sensorsmentioning

confidence: 99%

Detecting the Unseen: Understanding the Mechanisms and Working Principles of Earthquake Sensors

Tian¹,

Liu²,

Mo³

et al. 2023

Preprint

View full text Add to dashboard Cite

The application of movement-detection sensors is crucial for understanding surface movement and tectonic activities. The development of modern sensors has been instrumental in earthquake monitoring, prediction, early warning, emergency commanding and communication, search and rescue, and life detection. There are numerous sensors currently being utilized in earthquake engineering and science. It is essential to review their mechanisms and working principles thoroughly. Hence, we have attempted to review the development and application of these sensors by classifying them based on the timeline of earthquakes, physical or chemical mechanisms of sensors, and location of sensor platforms. In this study, we analyzed all available sensor platforms that have been widely used in recent years, with satellites and UAVs being among the most used. The findings of our study will be useful for future earthquake response and relief efforts, as well as research aimed at reducing earthquake disaster risks.

show abstract

Section: Seismic Monitoring Sensorsmentioning

confidence: 99%

Detecting the Unseen: Understanding the Mechanisms and Working Principles of Earthquake Sensors

Tian¹,

Liu²,

Mo³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…IMS has been extensively investigated in various applications owing to its high sensitivity (typically the detection limits are in the low ppb v or even ppt v ranges of concentration), analytical flexibility and simplicity. 30,31 This technology was employed during the study here described.…”

Section: Introductionmentioning

confidence: 99%

“…The ratio between these two values leads to the ion mobility constant, which is also an ion-specific value (equation ( 1)). 24,30 Since the velocity corresponds to the quotient between the length of the drift tube, L, and the drift time, D t , required to cross that distance, then, a new formulation for K can be expressed as:…”

Section: Introductionmentioning

confidence: 99%

“…Under the scope of this study, a tandem technology of gas chromatography-IMS (GC-IMS) was employed resulting in a hybrid device with overall improved characteristics for the in situ detection of VOCs in air analyses. 31,33 A detailed description of the operating principle of GC-IMS can be found elsewhere, 15,30 nonetheless, it is important to state that the GC column acts as a pre-separation procedure in which the analytes existent in the sample are separated by their capacity of adsorption to the internal walls of the chromatographic column. Here, each kind of analyte requires a specific time to traverse the entire column, commonly defined as retention time, R t .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Long-term in situ air quality assessment in closed environments: A gas chromatography–ion mobility spectrometry applicability study

Moura

Vassilenko

2023

Eur J Mass Spectrom (Chichester)

Self Cite

View full text Add to dashboard Cite

Contemporary life is mostly spent in indoor spaces like private houses, workplaces, vehicles and public facilities. Nonetheless, the air quality in these closed environments is often poor which leads to people being exposed to a vast range of toxic and hazardous compounds. Volatile organic compounds (VOCs) are among the main factors responsible for the lack of air quality in closed spaces and, in addition, some of them are particularly hazardous to the human organism. Considering this fact, we conducted daily in situ air analyses over 1 year using a gas chromatography–ion mobility spectrometry (GC-IMS) device in an indoor location. The obtained results show that 10 VOCs were consistently present in the indoor air throughout the entire year, making them particularly important for controlling air quality. All of these compounds were successfully identified, namely acetic acid, acetone, benzene, butanol, ethanol, isobutanol, propanoic acid, propanol, 2-propanol and tert-butyl methyl ether. The behaviour of the total VOCs (tVOCs) intensity during the period of analysis and the relative variation between consecutive months were studied. It was observed that the overall trend of tVOCs closely mirrored the variation of air temperature throughout the year suggesting their strong correlation. The results obtained from this study demonstrate the high quality and relevance of the data, highlighting the suitability of GC-IMS for in situ long-term air quality assessment in indoor environments and, consequently, for identifying potential health risks for the human organism in both short-term and long-term exposure scenarios.

show abstract

“…The most commonly used detectors in the IMS technique are spectrometers with drift tubes (DT IMS), in which the time of ion movement through a specific drift distance is measured. An extensive description of the IMS technique can be found in the monograph, as well as in numerous scientific publications. − Despite the fact that IMS detectors can be used alone as analytical devices, they can also be coupled to other analytical instruments e.g., gas and liquid chromatographs or mass spectrometers enhancing their analytical capabilities. − …”

Section: Introductionmentioning

confidence: 99%

Effect of Humidity on the Mobilities of Small Ions in Ion Mobility Spectrometry

et al. 2023

View full text Add to dashboard Cite

Ions in the ion mobility spectrometry (IMS) are mostly hydrated. A single peak in the drift time spectrum is usually generated by a mixture of ions differing in the number of attached water molecules. Under real IMS detector operating conditions, ions change their composition during movement in the drift region due to the changes in the number of water molecules attached to the ion. The impact of water vapor on the drift times of small ions at different temperatures was studied experimentally using an ion mobility spectrometer. The experiments were carried out for hydronium, ammonium, oxygen, chloride, bromide, and iodide ions. A theoretical model was developed, allowing us to calculate the effective mobility of ions for a given concentration of water vapor and temperature. The basic assumption adopted in this model was the linear dependence of the effective mobility coefficient on the mobility of ions with a certain degree of hydration. The weighting factors in this relationship are the abundances of individual types of ions. These parameters were determined by calculations based on the thermodynamics of the formation and disintegration of ionic clusters. From the known values of temperature, pressure, and humidity, the values of effective mobilities can be predicted quite accurately. The dependencies of reduced mobilities on the average degree of hydration were also determined. For these dependencies, the measurement points on the graphs are gathered along specific lines. This means that the average degree of hydration unambiguously determines the value of reduced mobility for a given type of ions.

show abstract

Contemporary ion mobility spectrometry applications and future trends towards environmental, health and food research: A review

Cited by 29 publications

References 141 publications

Detecting the Unseen: Understanding the Mechanisms and Working Principles of Earthquake Sensors

Detecting the Unseen: Understanding the Mechanisms and Working Principles of Earthquake Sensors

Long-term in situ air quality assessment in closed environments: A gas chromatography–ion mobility spectrometry applicability study

Effect of Humidity on the Mobilities of Small Ions in Ion Mobility Spectrometry

Contact Info

Product

Resources

About