Redox activity of airborne particulate matter at different sites in the Los Angeles Basin.

TL;DR: The evaluation of most of these studies shows that the smaller the size of PM the higher the toxicity through mechanisms of oxidative stress and inflammation, and Associations between chemical compositions and particle toxicity tend to be stronger for the fine and ultrafine PM size fractions.

TL;DR: The literature on atmospheric particulate maffer (PM), or atmospheric aerosol, has increased enormously over the last 2 decades and amounts now to some 1500-2000 papers per year in the refereed literature.

TL;DR: This work addresses air contaminants and their multiphase chemical interactions at the atmosphere−biosphere interface, including human lungs and skin, plant leaves, cryptogamic covers, soil, and aquatic surfaces, and the chemical interactions of reactive oxygen species and reactive nitrogen species, as well as carbonaceous combustion aerosols.

TL;DR: The role of distinct PM components in health impacts and mortality needs to be clarified by integrated research on various spatiotemporal scales for better evaluation and mitigation of aerosol effects on public health in the Anthropocene.

TL;DR: Estimates can be used to more fully understand the redox biochemistry that results from oxidative stress, which hopefully will provide a rationale and understanding of the cellular mechanisms associated with cell growth and development, signaling, and reductive or oxidative stress.

TL;DR: Fine particulate air pollution is a risk factor for cause-specific cardiovascular disease mortality via mechanisms that likely include pulmonary and systemic inflammation, accelerated atherosclerosis, and altered cardiac autonomic function.

TL;DR: The studies demonstrate that the increased biological potency of UFPs is related to the content of redox cycling organic chemicals and their ability to damage mitochondria.

TL;DR: In this article, a thermal-optical technique for analysis of the carbonaceous fraction of particulate diesel exhaust is reported, and the speciation of organic and elemental carbon is accomplished through temperature and atmosphere control, and by an optical feature that corrects for pyrolytically generated carbon.