A Streamlined, High-Volume Particle Impactor for Trace Chemical Analysis

Staymates, Matthew E.; Bottiger, Jerold R.; Schepers, Deborah; Staymates, Jessica L.

doi:10.1080/02786826.2013.804620

Cited by 6 publications

(6 citation statements)

References 41 publications

(51 reference statements)

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“…For example, this particle jet was used to help characterize the performance of a prototype shoe sampling system by delivering a quantified number of particles onto the surface of a shoe, 28 and was also used to help evaluate the particle collection characteristics of a prototype particle impactor for explosives sampling. 29 …”

Section: Discussionmentioning

confidence: 99%

The production of monodisperse explosive particles with piezo-electric inkjet printing technology

Staymates

Fletcher

Verkouteren

et al. 2015

Review of Scientific Instruments

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We have developed a method to produce discrete microparticles from compounds dissolved in nonpolar or polar solvents using drop-on-demand inkjet printer technology. A piezoelectric inkjet printhead located atop a drying tube produces precise droplets containing defined quantities of analyte. Droplets solidify into microparticles with known composition and size as they traverse down the drying tube. Because this is a drop-on-demand printing process, a known number of droplets are produced providing quantitative particle delivery to a variety of substrates. Particular emphasis is placed on the development and characterization of the drying tube in this work. The drying tube was modeled using computational fluid dynamics and experimentally evaluated using laser-based flow visualization techniques. A notable design feature of the drying tube is the ability to push heated air through the tube rather than the need to pull air from the exit. This provides the ability to place a known number of well-defined particles onto almost any substrate of interest, rather than having to collect particles onto a filter first and then transfer them to another surface. Several types of particles have been produced by this system, examples of which are pure particles of cyclotrimethylenetrinitramine ranging from 10 μm to 30 μm in diameter, and ammonium nitrate particles of 40 μm diameter. The final particle size is directly related to the solute concentration of the printing solution and the size of the initial jetted droplet.

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Section: Discussionmentioning

confidence: 99%

The production of monodisperse explosive particles with piezo-electric inkjet printing technology

Staymates

Fletcher

Verkouteren

et al. 2015

Review of Scientific Instruments

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“…Some other impactors have been designed to operate at high flow rates that exceed hundreds of liters per minute (Misra C. et al, 2002) and even thousands of liters per minute (Fulghum M.R. et al, 2012;Staymates M. et al, 2013) to collect more mass of PM 10 , PM 2.5 , PM 1 or PM 0.1 .…”

Section: The Inlet For a Single Size Fractionmentioning

confidence: 99%

Inertial Impaction Technique for the Classification of Particulate Matters and Nanoparticles: A Review

Tsai

2021

KONA

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Inertial impactors are applied widely to classify particulate matters (PMs) and nanoparticles (NPs) with desired aerodynamic diameters for further analyses due to their sharp cutoff characteristics, simple design, easy operation, and high collection ability. A few hundred papers have been published since the 1860s that addressed the characteristics and applications of the inertial impactors. In the last 30 years, our group has also carried out lots of studies to contribute to the design and the improvement of inertial impactors. With our understanding of inertial impactors, this article reviews previous studies of some typical types of the inertial impactors including conventional impactors, cascade impactors, and virtual impactors and the parameters for design consideration of these devices. The article also reviews some applications of the inertial impactors, which are mass concentration measurement, mass and number distribution measurement, personal exposure measurement, particulate matter control, and powder classification. The synthesized knowledge of the inertial impactor in this study can help researchers to design an inertial impactor with an accurate cutoff diameter, a sharp collection efficiency curve, and no particle bounce and particle overloading effects for long-term use for PM classification and control purposes.

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“…To alleviate this problem a new perpendicular inlet 23 was successfully developed to allow small particles (<1 mm) to be sampled to the exclusion of cloud particles (>1 mm) with no discernible artifact response. A streamlined, high-volume particle impactor 24 employed a single round jet designed to operate at a ow rate of 1000 L min À1 . The novelty of this study was not necessarily the design of this new impactor but the combination of computational uid dynamic tools with rapid prototyping using 3D printer technology.…”

Section: Sampling Techniquesmentioning

confidence: 99%

2014 atomic spectrometry update – a review of advances in environmental analysis

Butler

Cairns

Cook

et al. 2015

J. Anal. At. Spectrom.

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This is the 29th annual review of the application of atomic spectrometry to the chemical analysis of environmental samples. This Update refers to papers published approximately between September 2012 and July 2013 and continues the series ofAtomic Spectrometry Updates (ASUs) Developments in geochemical analysis included the production and (re)certification of new geological RMs for bulk, isotopic and microspatial analysis. Optimisation of LA-ICP-MS techniques for the interrogation of geochemical samples continues to be reported and a number of useful instrumental review articles (AMS, ICP-MS and SIMS) have been published.Feedback on this review is most welcome and the review coordinator can be contacted using the email address provided. Sampling techniquesThe development of personal workplace air samplers, used to monitor workers' exposure to airborne particles, continues to be a fertile area of research. cartridge assembly which could then be loaded directly into an XRF system for analysis. Initial wind tunnel tests using test aerosols of known particle size indicated that this sampler could collect representative particle size distributions.Generation of test particle atmospheres in a laboratory environment is difficult and it is most informative to see publications describing the development and validation of aerosol test chambers. A system 21 for source characterisation and controlled human exposure to NPs generated during gas-metal arc welding had an airtight 22 m 3 climate-controlled stainless steel chamber at its core. A variety of online measurements, e.g. using TEOM or SMPS, and offline measurements, e.g. using electron microscopy and PIXE techniques, could be made via sampling ports/samplers. Test particles were generated in a separate chamber and subsequently piped into the main chamber. Stable concentrations of atmospheric particles could be maintained for up to 6 h and concentrations could be varied from <5 µg m by EDXRF spectrometry (Cr, Cu, Fe, Ni, Pb and Zn), there were no significant differences in values between the two measurement approaches (paired t-test, p > 0.2, 95 % CI). In summary, the authors concluded that this method was suitable for the high throughput analysis of lightly loaded air filter samples. 11The bioaccessible metal fraction in urban aerosol particles may be a more informative metric than the total metal composition in assessng the potential health effects of exposure to inhaled particles. . Using this optimised method, the airborne levels of Ag in Buenos Aires was determined to be 2-4.5 ng m , respectively. Emission spectroscopyInvestigation into the use of LIBS for the analysis of aerosol samples is a focus of a number of research groups. Elemental emission intensities were normalised to carbon (measured at 247.856 nm) which could be used as an internal standard because the carbon emission from the underlying nylon filter was much larger and relatively more stable than the signal from the deposited carbonaceous particles. This approach was useful for minimising shot-to-...

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A Streamlined, High-Volume Particle Impactor for Trace Chemical Analysis

Cited by 6 publications

References 41 publications

The production of monodisperse explosive particles with piezo-electric inkjet printing technology

The production of monodisperse explosive particles with piezo-electric inkjet printing technology

Inertial Impaction Technique for the Classification of Particulate Matters and Nanoparticles: A Review

2014 atomic spectrometry update – a review of advances in environmental analysis

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