Nucleation and initial condensational growth of new particles in indoor environment

Kazuhide Ito, Hiroshi Harashima

Research output: Contribution to journalArticle


We have investigated the formation and early growth of indoor secondary aerosol particles derived from ozone/ d-limonene chemical reaction in indoor environment. The formation of new particles in indoor environment due to nucleation and the subsequent growth of these particles is an importance process that regulates the number concentrations of aerosol particles. The purpose of this paper is to develop the numerical modeling on formation of new aerosol particles in indoor environment from the view point of nucleation and the initial condensational growth caused by low-volatile gaseous pre-cursors. Using previous reported experimental data, we derive a fundamental numerical model for cluster activation based on the formula proposed by Kulmala et al. and compare its predictions with kinetic nucleation and observed particle formation. The results of the numerical model for cluster activation showed that 10nm particles were formulated with nucleation and subsequent initial condensation from about two limonene molecules.

Original languageEnglish
Pages (from-to)957-963
Number of pages7
JournalJournal of Environmental Engineering
Issue number642
Publication statusPublished - Aug 1 2009


All Science Journal Classification (ASJC) codes

  • Environmental Engineering

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