Roy M. Harrison

TL;DR: In this article, continuous measurements have been made at an urban background site of PM 10 mass by Tapered Element Oscillating Microbalance, particle number density by condensation nucleus counter and Fuchs surface area using an epiphaniometer.

TL;DR: In this paper, a sampling campaign for PM2.5 was carried out simultaneously in six major cities (2012-2013) to investigate the seasonal trends and the spatial variations of the ionic component of aerosol; identify chemical characteristics at the regional-scale and assess the potential effects of long-range transport using back-trajectory cluster analysis and concentration-weighted trajectory (CWT) models.

TL;DR: In this article, the authors investigated which specific physical, chemical or oxidative characteristics of ambient particulate matter (PM) are associated with adverse effects of PM on health by performing experimental exposure of human volunteers to air pollution at several realworld settings that had high contrast and low correlation between several PM characteristics.

TL;DR: In this paper, a novel design of experiment has been conducted at two sites, one heavily trafficked and the other residential, where the introduction of air directly to the center of an unoccupied room by use of a fan and duct giving a controlled air exchange rate and allowing an evaluation of particle losses purely due to uptake on indoor surfaces without the losses during penetration of the building envelope which affect most measurement programmes.

TL;DR: In this article, the formation of new atmospheric particles involves an initial step forming stable clusters less than a nanometre in size ( ~10 nm) Although at times, the same species can be responsible for both processes, it is thought that more generally each step comprises differing chemical contributors.