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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.4
- 수록면
- 219 - 233 (15page)
이용수
초록· 키워드
오류제보하기
Understanding the Nano size particles is of great interest due to their chemical and physical behaviors such as compositions, size distributions, and number concentrations. Therefore, accurate measurements of size distributions and number concentrations in ultrafine particles are getting required because expected losses such as diffusion for the instrument system from ambient inlet to detector are a significant challenge. In this study, the data using the computed settling losses, impaction losses, diffusion losses for the sampling lines (explored different sampling line diameters, horizontal length, number of bending, line angles, flow rates with and without a bypass), and diffusion losses for the Scanning Mobility Particle Sizers are examined. As expected, the settling losses and impaction losses are very minor under 100 nm, however, diffusion loss corrections for the sampling lines and the size instrument make a large difference for any measurement conditions with high numbers of particles smaller mobility size. Both with and without the loss corrections, which can affect to size distributions and number concentrations are described. First, 80% or more of the smallest particles (less than 10 nm) can be lost in the condition of a flow rate of 0.3 liter per minute and the length of sampling line of 1.0 m, second, total number concentrations of measurements are quite significantly affected, and the mode structure of the size distribution changes dramatically after the loss corrections applied. With compared to the different measurements, statistically diffusion loss corrections yield a required process of the ambient particle concentrations. Based on the current study, as an implication, a possibility of establishing direct revelation mechanisms is suggested.
목차
Abstract
1. INTRODUCTION
2. EXPERIMENTAL METHODS AND DATA ANALYSIS
3. RESULTS AND DISCUSSTION
4. SUMMARY AND SUGGESTIONS
5. IMPLICATIONS: Direct revelation mechanism as enforcement
ACKNOWLEDGMENTS
REFERENCES
참고문헌 (29)
참고문헌 신청
1. [학술지(정기간행물)] - Birmili, W. / 1997 / Determination of differential mobility analyzer transfer functions using identical instruments in series / Aerosol Sci. Technol. 2 : 215 ~ 223
2. [단행본] - Brockman, J.E. / 2001 / Sampling and transport of aerosols; in aerosol measurement: principles, techniques, and applications / John Wiley & Sons
3. [학술지(정기간행물)] - Chen, D.-R. / 1998 / Design and evaluation of a nanometer aerosol differential mobility analyzer (Nano-DMA) / J. Aerosol Sci. 29 : 497 ~ 509
4. [기타자료] - Clarkson, K.W. / 1998 / West business law : 827 ~
5. [학술지(정기간행물)] - Dal Maso, M. / 2005 / Formation and growth of fresh atmospheric aerosols: eight years of aerosol size distribution data from SMEAR II, Hyytiälä, Finland / Boreal Environ.Res. 10 : 323 ~ 336
2. [단행본] - Brockman, J.E. / 2001 / Sampling and transport of aerosols; in aerosol measurement: principles, techniques, and applications / John Wiley & Sons
3. [학술지(정기간행물)] - Chen, D.-R. / 1998 / Design and evaluation of a nanometer aerosol differential mobility analyzer (Nano-DMA) / J. Aerosol Sci. 29 : 497 ~ 509
4. [기타자료] - Clarkson, K.W. / 1998 / West business law : 827 ~
5. [학술지(정기간행물)] - Dal Maso, M. / 2005 / Formation and growth of fresh atmospheric aerosols: eight years of aerosol size distribution data from SMEAR II, Hyytiälä, Finland / Boreal Environ.Res. 10 : 323 ~ 336
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UCI(KEPA) : I410-ECN-0101-2010-539-002975198