Evaluation of particle growth systems for sampling and analysis of atmospheric fine particles--颗粒学报PARTICUOLOGY

Kim, D. S., Hong, S. B., Kwon, J.-T., & Park, K. (2011). Evaluation of particle growth systems for sampling and analysis of atmospheric fine particles. Particuology, 9(6), 606–610. https://doi.org/10.1016/j.partic.2011.04.007

Evaluation of particle growth systems for sampling and analysis of atmospheric fine particles

Dae Seong Kim ^a, Sang Bum Hong ^b, Jung-Taek Kwon ^c, Kihong Park ^a *

a Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology, Buk-gu, Gwangju 500-712, Republic of Korea
b Korea Polar Research Institute, Yeonsu-gu, Incheon 406-840, Republic of Korea
c Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Seoul 151-741, Republic of Korea

10.1016/j.partic.2011.04.007

Volume 9, Issue 6, December 2011, Pages 606-610

Received 3 January 2011, Revised 15 April 2011, Accepted 15 April 2011, Available online 15 September 2011.

E-mail: kpark@gist.ac.kr

Highlights

Abstract

Three types of water-based condensational growth systems, which can enable particles to grow in size to facilitate sampling and subsequent chemical analysis, were evaluated. The first one is a mixing type growth system where aerosols are mixed with saturated water vapor, the second one is a thermal diffusive growth system where warm flow enters cold-walled tube, and the third one is a laminar flow type where cold flow enters a warm wet-wall tube. Hygroscopic sodium chloride (NaCl), ammonium sulfate ((NH₄)₂SO₄) and ammonium nitrate (NH₄NO₃), and non-hygroscopic polystyrene latex (PSL) particles, in the size range of 50–400 nm, were used to determine their growth factors through the growth systems. Our data showed that the third-type growth system could enable particles to grow most efficiently regardless of their hygroscopic property. Collection efficiency of particles in the size range of 0.05–2.5 μm, in a continuous aerosol sampler after they passed through the third-type growth system was about 100%, suggesting that the third-type growth system would be the most useful among the tested growth systems for sampling and subsequent chemical analysis of fine and ultrafine particles.

Graphical abstract

Keywords

Particle growth chamber; Condensational growth; Particle sampler; Hygroscopic particles

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