Introduction to Particles in Indoor Air

Abstract

This chapter provides an overview of the section on Indoor Air Particles. This section focuses on the physical processes that affect particle concentrations and some major sources. Penetration of particles from the ambient aerosol into the indoor environment is an important source of indoor particles. The particles depending on their size can then deposit and can be resuspended. Semi-volatile species partition into particles and the gaseous phase depending on factors such as vapor pressure at typical indoor temperatures and solubility into organic phases. The dynamics of these processes are presented in separate chapters that are