Abstract
For rapid and effective detection of airborne microorganisms, it is preferable to remove dust particles during the air sampling process because they can reduce the detection accuracy of measurements. In this study, a methodology of real-time separation ofaerosolized Staphylococcus epidermidis (S. epidermidis) andpolystyrene latex (PSL) particles of similar size was investigated. These two species represent biological and non-biological particles, respectively. Due to their different relative permittivities, they grasp different numbers of air ions under corona discharge. After these charged particles enter a mobility analyzer with airflow, in which an electric field is applied perpendicular to the airflow, the S. epidermidis and PSL particles separate, due to the difference in their electric mobilities, and exit through two different outlets. Purities and recoveries for S. epidermidis and PSLat their respective outlets were determined with measurements of aerosol number concentrations and ATP bioluminescence intensities at the inlet and two outlets. The results were that purities for PSL and S. epidermidis were 70% and 80%, respectively. This methodology provides a rapid and simple way to increase the detection accuracy of bacterial agents in air.
| Original language | English |
|---|---|
| Pages (from-to) | 1389-1397 |
| Number of pages | 9 |
| Journal | Aerosol Science and Technology |
| Volume | 51 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2017 Dec 2 |
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All Science Journal Classification (ASJC) codes
- Environmental Chemistry
- Materials Science(all)
- Pollution
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Real-time separation of aerosolized Staphylococcus epidermidis and polystyrene latex particles with similar size distributions. / Mohamadi Nasrabadi, Ali; Han, Jang Seop; Massoudi Farid, Milad; Lee, Sang Gu; Hwang, Jungho.
In: Aerosol Science and Technology, Vol. 51, No. 12, 02.12.2017, p. 1389-1397.Research output: Contribution to journal › Article
TY - JOUR
T1 - Real-time separation of aerosolized Staphylococcus epidermidis and polystyrene latex particles with similar size distributions
AU - Mohamadi Nasrabadi, Ali
AU - Han, Jang Seop
AU - Massoudi Farid, Milad
AU - Lee, Sang Gu
AU - Hwang, Jungho
PY - 2017/12/2
Y1 - 2017/12/2
N2 - For rapid and effective detection of airborne microorganisms, it is preferable to remove dust particles during the air sampling process because they can reduce the detection accuracy of measurements. In this study, a methodology of real-time separation ofaerosolized Staphylococcus epidermidis (S. epidermidis) andpolystyrene latex (PSL) particles of similar size was investigated. These two species represent biological and non-biological particles, respectively. Due to their different relative permittivities, they grasp different numbers of air ions under corona discharge. After these charged particles enter a mobility analyzer with airflow, in which an electric field is applied perpendicular to the airflow, the S. epidermidis and PSL particles separate, due to the difference in their electric mobilities, and exit through two different outlets. Purities and recoveries for S. epidermidis and PSLat their respective outlets were determined with measurements of aerosol number concentrations and ATP bioluminescence intensities at the inlet and two outlets. The results were that purities for PSL and S. epidermidis were 70% and 80%, respectively. This methodology provides a rapid and simple way to increase the detection accuracy of bacterial agents in air.
AB - For rapid and effective detection of airborne microorganisms, it is preferable to remove dust particles during the air sampling process because they can reduce the detection accuracy of measurements. In this study, a methodology of real-time separation ofaerosolized Staphylococcus epidermidis (S. epidermidis) andpolystyrene latex (PSL) particles of similar size was investigated. These two species represent biological and non-biological particles, respectively. Due to their different relative permittivities, they grasp different numbers of air ions under corona discharge. After these charged particles enter a mobility analyzer with airflow, in which an electric field is applied perpendicular to the airflow, the S. epidermidis and PSL particles separate, due to the difference in their electric mobilities, and exit through two different outlets. Purities and recoveries for S. epidermidis and PSLat their respective outlets were determined with measurements of aerosol number concentrations and ATP bioluminescence intensities at the inlet and two outlets. The results were that purities for PSL and S. epidermidis were 70% and 80%, respectively. This methodology provides a rapid and simple way to increase the detection accuracy of bacterial agents in air.
UR - http://www.scopus.com/inward/record.url?scp=85023765823&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85023765823&partnerID=8YFLogxK
U2 - 10.1080/02786826.2017.1350257
DO - 10.1080/02786826.2017.1350257
M3 - Article
AN - SCOPUS:85023765823
VL - 51
SP - 1389
EP - 1397
JO - Aerosol Science and Technology
JF - Aerosol Science and Technology
SN - 0278-6826
IS - 12
ER -