Abstract
Sub-23 nm particles in motor vehicle exhaust have a significant impact on the environment and human health, but current analytical methods have low particle size resolution that make it difficult to truly reflect the sub-23 nm particles emission characteristics in exhaust gas. A differential mobility analyzer (DMA) combining a semi-ellipsoidal gas flow conditioner, a multi-hole ring, and an anti-turbulent slit was designed to improve the particle size resolution of the DMA for sub-23 nm particles at a conventional sheath gas flow rate. The effect of the anti-turbulent slit on the DMA particle size resolution was modeled by COMSOL software. Through coupling analysis of the electric field, flow field, and particle trajectory, the DMA particle size resolution improved with the increase in depth and decrease in width of the anti-turbulent slit, and the critical size of the anti-turbulent slit of the self-developed DMA was determined. The experimental results showed that the particle size resolution of the developed high-resolution DMA for 12–23 nm particles was 7–12.5 under the condition that the transfer function height is at the same level, a value that was 2.1 times that of similar commercial equipment (TSI 3081). The analyzer can provide a more effective means for the study of sub-23 nm particles emission patterns in gases such as motor vehicle exhaust.
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REFERENCES
Wang, K., China’s motor vehicle fleet exceeds 400 million units, The People’s Public Security Newspaper, July 7, 2022.
Zimmerman, N., Wang, J.M., Jeong, C.H., Ramos, M., Hilker, N., Healy, R.M., Sabaliauskas, K., Wallace, J.S., and Evans, G.J., Environ. Sci. Technol., 2016, vol. 50, no. 4, p. 2035. https://doi.org/10.1021/acs.est.5b04444
Giechaskiel, B., Vanhanen, J., Väkevä, M., and Martini, G., Aerosol Sci. Technol., 2017, vol. 51, no. 5, p. 626. https://doi.org/10.1080/02786826.2017.1286291
Toumasatos, Z., Kontses, A., Doulgeris, S., Samaras, Z., and Ntziachristos, L., Aerosol Sci. Technol., 2021, vol. 55, no. 2, p. 182. https://doi.org/10.1080/02786826.2020.1830942
Hu, Z., Lu, Z., Song, B., and Quan, Y., Sci. Total Environ., 2021, vol. 762, p. 143128. https://doi.org/10.1016/j.scitotenv.2020.143128
Center, J.R., PMP Revisions to ECE/TRANS/WP.29/GRPE/2020/14: sub 23 nm PNMeasurements GRPE-81-10, 2020. http://www.unece.org/trans/main/wp29/wp29wgs/wp29grpe/grpeinf81.html.
Knutson, E.O. and Whitby K.T., J. Aerosol Sci., 1975, vol. 6, no. 6, p. 453. https://doi.org/10.1016/0021-8502(75)90061-0
Liu, B.Y. and Pui, D.Y., J. Colloid Interface Sci., 1974, vol. 47, 1, p. 155. https://doi.org/10.1016/0021-9797(74)90090-3
Kirchner, U., Vogt, R., and Maricq, M., SAE Technical Paper, 2010. https://doi.org/10.4271/2010-01-0789
de la Mora, J.F. and Kozlowski, J., J. Aerosol Sci., 2013, vol. 57, p. 45. https://doi.org/10.1016/j.jaerosci.2012.10.009
Rosser, S. and de la Mora, J.F., Aerosol Sci. Technol., 2005, vol. 39, no. 12, p. 1191. https://doi.org/10.1080/02786820500444820
Brunelli, N.A., Flagan, R.C. and Giapis, K.P., Aerosol Sci. Technol., 2009, vol. 43, no. 1, p. 53. https://doi.org/10.1080/02786820802464302
Chen, D.R., Pui, D.Y., Hummes, D., Fissan, H., Quant, F.R. and Sem, G.J., J. Aerosol Sci., 1998, vol. 29, nos. 5–6, p. 497. https://doi.org/10.1016/S0021-8502(97)10018-0
Liedtke, K., Diploma Thesis, Univ. of Duisburg, 1999.
Eichler, T., De Juan, L., and de la Mora, J.F., Aerosol Sci. Technol., 1998, vol. 29, no. 1, p. 39. https://doi.org/10.1080/02786829808965549
de la Mora, J.F., J. Aerosol Sci., 2017, vol. 113, p. 265. https://doi.org/10.1016/j.jaerosci.2017.07.020
Rosenberger, T., Kiesler, D., Hontañón, E., Fuentes, D., Ramiro, E., and Kruis, F.E., Aerosol Sci. Technol., 2019, vol. 53, no. 10, p. 1172. https://doi.org/10.1080/02786826.2019.1642443
Winklmayr, W.G.P.A.O.A., Reischl, G.P., Lindner, A.O., and Berner, A., J. Aerosol Sci., 1991, vol. 22, no. 3, p. 289. https://doi.org/10.1016/S0021-8502(05)80007-2
Biskos, G., Reavell, K., and Collings, N., J. Electrost., 2005, vol. 63, no. 1, p. 69. https://doi.org/10.1016/j.elstat.2004.07.001
Le The, H., Le-Thanh, H., Tran-Minh, N., and Karlsen, F., Proc. 2nd Middle East Conference on Biomedical Engineering, Doha, 2014, p. 25 https://doi.org/10.1109/MECBME.2014.6783199
Chen, M., Wang, H., Sun, Q., Yu, F., Wang, Y., Wan, W., Wang, C., Gui, H., Liu, J., and Lü, L., Atmosphere, 2019, vol. 10, no. 3, p. 116. https://doi.org/10.3390/atmos10030116
Knutson, E. and Whitby K., J. Aerosol Sci., 1975, vol. 6, no. 6, p. 443. https://doi.org/10.1016/0021-8502(75)90060-9
Stolzenburg, M.R., PhD Thesis, Univ. of Minnesota, 1988.
Hummes, D., Neumann, S., Fissan, H., and Stratmann, F., Part. Part. Syst. Charact., 1996, vol. 13, no. 5, p. 327. https://doi.org/10.1002/ppsc.19960130513
Fissan, H.D.F.P.S.D.D., Hummes, D., Stratmann, F., Büscher, P., Neumann, S., Pui, D.Y.H., and Chen, D., Aerosol Sci. Technol., 1996, vol. 24, no. 1, p. 1. https://doi.org/10.1080/02786829608965347
Stratmann, F.T.D.H. and Kauffeldt, T., Aerosol Sci. Technol., 1997, vol. 26, no. 4, p. 368. https://doi.org/10.1080/02786829708965437
ACKNOWLEDGMENTS
This research was supported by the National Natural Science Foundation of China (nos. 42005108, U2133212), the Science and Technological Fund of Anhui Province (no. 2008085MD116), and Major Subject of Science and Technology of Anhui Province (no. 202003a07020005).
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Yuan, Y., Yu, T., Yang, Y. et al. Design and Experimental Validation of a High-Resolution Nanoparticle Differential Mobility Analyzer. Instrum Exp Tech 66, 649–660 (2023). https://doi.org/10.1134/S0020441223040085
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DOI: https://doi.org/10.1134/S0020441223040085