David AU YANG, PhD

auyangdavid[at]gmail.com

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Atmospheric pollutions due to high concentrations of fine particles are nowadays encountered in numerous cities. Besides the sanitary issues caused by high concentration of fine particles in the atmosphere, they will also have an impact on the atmospheric dynamics. Understanding their formation are thus of importance.

Constraining the origin of both sulfates and particles-bound mercury (PBM) which are commonly found in fine particles could help understand how they are formed. Isotopic compositions of S34S, Δ33S, Δ36S) and Hg (δ202Hg, Δ199Hg, Δ200Hg, Δ201Hg) have been shown to be excellent sources and processes tracers. Thus, I mainly use both mass-independent isotope effects and chemistry to understand the isotopic variations measured in both sulfates and PBM to constrain their origins. I am currently working with these two systems (S and Hg) but my goal is to couple several isotopic systems to have a global view and refine the identification of sources and atmospheric processes.

Curious by nature and with a strong cognitive appetite, I am seeking for new opportunities for applying my skills in atmospheric geochemistry but also to learn different techniques. I'm open to any work and collaboration propositions.


Last Update : 19/11/20