Fluidized Bed Generation of Stable Silica Nanoparticle Aerosols

Clemente, Alberto; Balas, Francisco; Lobera, M. Pilar; Irusta, Silvia; Santamarı́a, Jesús

doi:10.1080/02786826.2013.797952

Cited by 11 publications

(9 citation statements)

References 32 publications

(36 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unintended nanoparticle emission during a usual laboratory operation was simulated by accidental aerosol generation during the transfer of fluorescent nanoparticles between two beakers. Alternatively, well-defined, steady aerosols streams containing nanoparticles with a known concentration were generated either with a fluidized bed aerosol [27] generator or with a pressure-pulse generator [28]. These nanoparticle-containing streams were then passed through a network of glass pipes or through filtering masks to assess surface deposition.…”

Section: Resultsmentioning

confidence: 99%

“…To this end, two different aerosol generators were used for the production of nanoparticulate aerosols of fluorescent SiO2 nanoparticles. For the Ru(phen)3@SiO2 nanoparticles, aerosols were produced using the fluidized bed aerosol generator (FBAG) technique as described elsewhere [27]. For the FITC@SiO2 nanoparticles, a pressure pulse nanoparticle aerosol generator was operated as previously reported [28].…”

Section: Analysis Of the Deposition Of Nanoparticle Aerosolsmentioning

confidence: 99%

See 1 more Smart Citation

Fast and simple assessment of surface contamination in operations involving nanomaterials

Clemente

Jiménez

Encabo

et al. 2019

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

Highlights Surface contamination caused by handling nanomaterials was traced using fluorescently labeled 80-nm silica nanoparticles. Fluorescent silica nanoparticles granted high analytical sensibility, small sizes and high dispersability in aerosol phase. Below 100 ppm of fluorescent nanoparticles added to the aerosol matter allowed exposure assessment in wide contact surfaces. The appropriate illumination revealed the deposition zones, allowing a low-cost procedure for risk assessment tests.The deposition of airborne nanosized matter onto surfaces could pose a potential risk in occupational and environmental scenarios. The incorporation of fluorescent labels, namely fluorescein isotiocyanate (FITC) or tris-1,3-phenanthroline ruthenium (II) chloride (Ru(phen)3Cl2), into spherical 80-nm silica nanoparticles allowed the detection after the illumination with LED light of suitable wavelength (365 or 405 nm respectively). Monodisperse nanoparticle aerosols from fluorescently labeled nanoparticles were produced under safe conditions using powder generators and the deposition was tested into different surfaces and filtering media. The contamination of gloves and work surfaces that was demonstrated by sampling and SEM analysis becomes immediately clear under laser or LED illumination. Furthermore, nanoparticle aerosols of about 10 5 nanoparticles/cm 3 were alternatively fed through a glass pipe and personal protective masks to identify the presence of trapped nanoparticles at under 405 nm or 365 nm LED light. This testing procedure allowed a fast and reliable estimation of the contamination of surfaces with nanosized matter, with a limit of detection based on the fluorescence emission of the accumulated solid nanoparticles of 40 ng of Ru(phen)3@SiO2 of silica per mg of nonfluorescent matter.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Analysis Of the Deposition Of Nanoparticle Aerosolsmentioning

confidence: 99%

Fast and simple assessment of surface contamination in operations involving nanomaterials

Clemente

Jiménez

Encabo

et al. 2019

Journal of Hazardous Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fluidized bed aerosol generators (FBGs) have been used in several studies to disperse dry samples as sub-to supermicrometer size range aerosol particles (Guichard, 1976;Moreno et al, 1976;Boucher and Lua, 1982;Wang et al, 1998;Gauthier et al, 1999;Niedermeier et al, 2010;Clemente et al, 2013) and are commercially available e.g. Fluidized Bed Aerosol Generator (FBAG,Model 3400A,TSI Inc.).…”

Section: Introductionmentioning

confidence: 99%

Dry particle generation with a 3D printed fluidized bed generator

Roesch

Cziczo

2017

Preprint

View full text Add to dashboard Cite

Abstract. Here we describe the design and testing of a compact fluidized bed aerosol generator named PRIZE (PRinted fluidIZed bed gEnerator) manufactured using stereolithography (SLA) printing. Dispersing small quantities of powdered materials – due either to rarity or expense – is challenging due to a lack of small, low-cost dry aerosol generators. With this as motivation, we designed and built a generator that uses a mineral dust or other dry powder sample mixed with bronze beads that sit atop a porous screen. A particle free airflow is introduced, dispersing the sample as airborne particles. Particle number concentration and size distributions were measured during different stages of the assembling process to show that the SLA 3D printed generator did not generate particles until the mineral dust sample was introduced. Time-series measurements with Arizona Test Dust (ATD) showed stable total particle number concentrations of 10–150 cm−3, depending on the sample mass, from the sub- to super-micrometer size range. PRIZE is simple to assemble, easy to clean, inexpensive and deployable for laboratory and field studies that require dry particle generation.

show abstract

“…FBGs have been used in several studies to disperse dry samples as sub-to super-micrometer size range aerosol particles (Guichard, 1976;Moreno and Blann, 1976;Boucher and Lua, 1982;Wang et al, 1998;Gauthier et al, 1999;Niedermeier et al, 2010;Clemente et al, 2013) with commercially available version such as the TSI Fluidized Bed Aerosol Generator (FBAG,model 3400A,TSI Inc.) or the small-scale powder disperser (SSPD, model 3343, TSI Inc.). Some issues with dispersion have become apparent from the use of these instruments.…”

Section: Introductionmentioning

confidence: 99%

Reply to RC2

Rösch¹

2017

Preprint

View full text Add to dashboard Cite

Fluidized Bed Generation of Stable Silica Nanoparticle Aerosols

Cited by 11 publications

References 32 publications

Fast and simple assessment of surface contamination in operations involving nanomaterials

Fast and simple assessment of surface contamination in operations involving nanomaterials

Dry particle generation with a 3D printed fluidized bed generator

Reply to RC2

Contact Info

Product

Resources

About