Atmospheric processing of aerosols

Authors: Nicholas Mark Davidson (University of Birmingham)
Co-authored by industrial partner: No

Type: Thesis

State: Published (Approved)
Published: July 2018

Abstract: The chemistry of aerosol particles is critical to the influence said particles have over human health, air quality and the distribution of nutrients across the world. Current models estimate that windborne dust represents the movement of thousands of teragrams of solid material of varying composition and solubility across continents and into the world’s oceans. Understanding the composition and surface reactivity of anthropogenic particles from industry, agriculture and vehicle emissions is vital to understanding their potential impact on the world, and the structure and behaviour of inhalable pharmaceuticals is a strong determinant of their efficacy. The following work examines a broad selection of natural and anthropogenic particulate samples with synchrotron-based techniques, including analysis of ship emissions collected directly from stacks for the first time. The effect of simulated atmospheric acid processing on the solubility of iron on coal fly ash is evaluated, and optical trapping is used in conjunction with analytical techniques to observe the influence of relative humidity on the properties of pharmaceutical aerosols and aqueous droplets containing fluorescent protein solutions.

Subject Areas: Environment, Earth Science, Chemistry

Instruments: B18-Core EXAFS , I18-Microfocus Spectroscopy

Other Facilities: ANKA