An ion-focusing aspiration condenser as an ion mobility spectrometer

Zimmermann, Stefan; Abel, Nora; Baether, Wolfgang; Barth, Sebastian

doi:10.1016/j.snb.2007.02.038

Cited by 37 publications

(37 citation statements)

References 9 publications

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“…A portable and cheap SMPS with high-resolution suitable for the needs of atmospheric monitoring and occupational hygiene is required. One of the most important developments of a portable SMPS is to design a small differential mobility analyzer (DMA), which are mainly three types of DMA including radial (Hurd and Mullins, 1962;Zhang et al, 1995;Fissan et al, 1996;Qi et al, 2008;Brunelli et al, 2009), cylindrical (Babis et al, 2009He, 2014) and planar (Erikson, 1921;Knutson and Whitby, 1975;Spangler, 2000;Zimmermann et al, 2007Zimmermann et al, , 2008. The various manufacturers of commercial DMAs utilize similar dimensions (Steer et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Experimental Comparison of Two Portable and Real-Time Size Distribution Analyzers for Nano/Submicron Aerosol Measurements

Hsiao

Lee

Chen

et al. 2016

Aerosol Air Qual. Res.

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Two portable, battery powered particle size distribution analyzers, TSI NanoScan scanning mobility particle sizer (TSI NanoScan SMPS 3910, USA) and Kanomax Portable Aerosol Mobility Spectrometer (Kanomax PAMS 3300, Japan), have been recently introduced to the market. Both are compact and allow researchers to rapidly measure and monitor ambient or indoor ultrafine and nanoparticles in real time. In addition, both instruments apply the SMPS measuring scheme, utilizing a corona charger in place of a radioactive neutralizer, and are integrated with a hand-held condensation particle counter (CPC). In this study, the different designs, flow schemes, and operational settings of both instruments have been summarized based on the information released by the manufacturers and the available published literature. The performance characteristics and monitoring capability of these two portable ultrafine to nanoparticle sizers were investigated and compared to a reference TSI 3936 lab-based SMPS under identical conditions. Reasonable agreement was found between the three instruments in terms of their efficiency in sizing and counting polydispersed particles. Of the two portable analyzers, PAMS was able to provide a higher sizing resolution for monodispersed particle measurements than NanoScan, when operated under the High Mode (higher sheath to aerosol flow ratio).

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Section: Introductionmentioning

confidence: 99%

Experimental Comparison of Two Portable and Real-Time Size Distribution Analyzers for Nano/Submicron Aerosol Measurements

Hsiao

Lee

Chen

et al. 2016

Aerosol Air Qual. Res.

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show abstract

“…Due to the much higher mobility of ions, smaller drift regions are required, which greatly helps to facilitate miniaturization. Examples that have achieved this to such a degree as to be compatible with a handheld device include both planar (Spangler 2000;Zimmermann et al 2007Zimmermann et al , 2008 and cylindrical (Babis et al 2009) geometries. While interesting in their own right and useful for the applications they were designed for, none of these devices fit the requirements for a high-resolution portable device with a wide enough size range to cover most aerosol particle applications.…”

Section: Introductionmentioning

confidence: 99%

Portable Planar DMA: Development and Tests

Steer

Gorbunov

Muir

et al. 2014

Aerosol Science and Technology

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A novel high-resolution planar and portable differential mobility analyzer (DMA) has been designed and built (Nano-ID R PMC500, Naneum, Canterbury, UK). Finite element multi-physics numerical modeling was employed to optimize the geometry of the DMA and to find a regime for high resolution within the confines of a portable instrument. The numerical approach for solving the Navier-Stokes equation was verified by comparison of calculated data to experimental values. The PMC500 was calibrated and tested with different monodisperse aerosol challenges. The PMC500 portable DMA is shown to have good sizing accuracy and resolution, similar in performance to commercially available desktop instruments.

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“…Field-portable instruments based on high-field asymmetric-waveform IMS and differential mobility spectrometry (Guevremont, 2004) are now commercially available (Chemring Detection Systems, 2014). An aspiration-type device is based on discrimination by the pattern recognition of several IMS cells of different ion mobilities and polarities (Utriainen et al, 2003;Zimmermann et al, 2007). Environics Oy (Mikkeli, Finland) manufactures two types of IMS detectors.…”

Section: Ims Methodsmentioning

confidence: 99%

On-Site Detection of Chemical Warfare Agents

Seto

2015

Handbook of Toxicology of Chemical Warfare Agents

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An ion-focusing aspiration condenser as an ion mobility spectrometer

Cited by 37 publications

References 9 publications

Experimental Comparison of Two Portable and Real-Time Size Distribution Analyzers for Nano/Submicron Aerosol Measurements

Experimental Comparison of Two Portable and Real-Time Size Distribution Analyzers for Nano/Submicron Aerosol Measurements

Portable Planar DMA: Development and Tests

On-Site Detection of Chemical Warfare Agents

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