Evaluation of Eight Bioaerosol Samplers Challenged with Aerosols of Free Bacteria

Utilization of natural electrical charges on airborne microorganisms for their collection by electrostatic means

“…Moreover, microorganisms collected on filters have to be extracted in order to cultivate and enumerate them. Microorganism extraction from filters may not have high biological recovery rate (Jensen, Todd, Davis, & Scarpino, 1992). The sampling limitations described here may negatively affect the results of bioaerosol studies leading to inaccurate profiles of bioaerosol concentrations both indoors and outdoors and, consequently, resulting in underestimation of health risks associated with microbial air contaminants.…”

Diversity of airborne bacteria in samples collected using different devices for aerosol collection

“…However, the extant studies use various sampling approaches, which complicates the comparison of microbial communities, diversity, and ecology. While many studies have compared the sampling efficiency of different aerosol collectors (Fields et al 1974;Jensen et al 1992;Kesavan et al 2010;King et al 2009;Whyte et al 2007), no study, to the best of our knowledge, has addressed how the sampling strategy can affect apparent microbial diversity of air samples. Since different devices have different particle cut-off diameter, the choice of sampling technique may certainly affect the composition of the sampled community; let alone the most common bacteria may range in diameter from 0.1 to 5 lm, while airborne fungal spores and algae are typically 5-15 lm and may be as large 100 lm (Tormo et al 2001;Wittmaack et al 2005).…”

A study of bacterial culturability during bioaerosol challenge test using a test chamber

“…The methodology and capture efficiency of air samplers have been investigated and reported (Duchaine et al, 2001;Hernandez et al, 1999;Jensen, Todd, Davis, & Scarpino, 1992;Thompson, Donnelly, Grinshpun, Juozaitis, & Willeke, 1994;Yamazaki, 2007;Yao and Mainelis, 2006a). And recently, the bioaerosol challenge test has been often conducted to evaluate the efficiency of air purifiers as same as air samplers (Okuda, Shimizu, & Okaue, 2008).…”