Xiawei Yu

TL;DR: In this paper, the first observations of the oxygen-17 excess of atmospheric nitrate were collected in Beijing haze to reveal the relative importance of different nitrate formation pathways, and simultaneously observed the simultaneously observed δ 15 N ( NO 3 - ).

TL;DR: In this article, a long-term continuous measurements of speciated atmospheric mercury were conducted from July 2013 to June 2014 in Hefei, a midlatitude inland city in eastern central China that experiences frequent haze pollution.

TL;DR: In this article, a comprehensive investigation of ozone, its precursors as well as aerosols in the low troposphere was conducted over the University of Chinese Academy of Sciences site in Beijing during the period of October 26 to November 6, 2014, with a focus on the comparison between polluted and clean conditions.

TL;DR: Correlation analysis implies that the combined effect of NOX emission sources and isotopic fractionation processes are responsible for δ15N(NO3-) variations, and observations with the aid of model simulation in future study will further improve the understanding of reactive nitrogen chemistry in urban regions.

TL;DR: The first investigation into OSs in both the Arctic and Antarctic is presented, finding a high degree of oxidation in aerosol samples, which might be due to the combined effects of enhanced photo-oxidation in summertime or continuous oxidation during transport to the polar region.