Collection efficiency of a midget impinger for nanoparticles in the range of 3–100 nm

Improving the collection efficiency of the liquid impinger for ultrafine particles and viral aerosols by applying granular bed filtration

“…However, most previous studies regarding collection efficiency of liquid impingers for bioaerosols focus on the micrometer-sized bioaerosols (Tseng & Li, 2005). Up to the present time, there are only a few studies on the collection efficiencies of liquid impingers for submicron viral aerosols, and ultrafine particles (Hogan et al, 2005;Miljevic, Modini, Bottle, & Ristovski, 2009;Spanne, Grzybowski, & Bohgard, 1999;Wei, Rosario, & Montoya, 2010). Spanne et al (1999) found that the collection efficiency of an AGI for particles with diameters between 0.02 and 0.7 mm was less than 20%.…”

Investigation of inherent and latent internal losses in liquid-based bioaerosol samplers

“…Liquid based samplers have been used to collect bacteria (Zhao et al, 2011) and fungi (Goncalves et al, 2010), as well as endotoxin (Yao et al, 2009). Their application to collect viruses and nanoparticles has also been explored (Dart & Thornburg, 2008;Wei et al, 2010).…”

Standardization of a Protocol for Quantitative Evaluation of Anti-Aerosolized Influenza Virus Activity by Vapors of a Chemically-Characterized Essential Oil Blend

“…aerosolized virus, that will be subjected to viability evaluation after contact with the antiviral vapors [6][7][8]. The construction of impingers by many previous investigators required a pulverization chamber to aerosolize the viral particles and to provide contact with vapors of experimental air sanitizers, connected to a collection flask, which in turn is connected to a vacuum pump, creating a converged environmental air stream that delivers the aerosolized particles to a liquid phase in the collection flask [9][10][11][12]. The collected virus in the liquid phase will be tested for its viability by propagating it in appropriate cell culture line or in chicken embryos [13].…”