This collection brings together a series of papers dedicated to Prof. Roy Harrison.
Guest Editors
Manuel Dallosto (Institut de Ciencies del Mar, CSIC, Spain)
Noel Aquilina (University of Malta)
Last Updated: 13 Dec 2024
Dedication to Roy Harrison
EN24057Characterisation and source apportionment of chemical components in fine particulate matter from atmosphere in two districts of Lanzhou City
Qin Cui 
, Jianyun Sun, Yufang Fan and Yongjun Li
, Jianyun Sun, Yufang Fan and Yongjun Li
Environmental context. Exploring the characterisation and sources of the chemical composition of fine particulate matter in the atmosphere is critical to human health. Dust, primarily from soil, is the main source of atmospheric fine particulate matter in Chengguan and Xigu Districts of Lanzhou City, Gansu Province, rather than other causes. This provides directions and ideas for future local ecological environment and pollution management. (Image credit: Qin Cui.)
This article belongs to the collection: Dedication to Roy Harrison.
EN24030Diversity of ammonia sources in Tianjin: nitrogen isotope analyses and simulations of aerosol ammonium
Libin Wu , Yiwen Zhang, Yunting Xiao, Jialei Zhu, Zongbo Shi , Yuantao Wang, Hong Xu, Wei Hu, Junjun Deng, Miao Tang and Pingqing Fu
, Yiwen Zhang, Yunting Xiao, Jialei Zhu, Zongbo Shi , Yuantao Wang, Hong Xu, Wei Hu, Junjun Deng, Miao Tang and Pingqing Fu
Environmental context. Atmospheric particulate NH4+, primarily produced from the reaction of NH3 and acids, is an important component of PM2.5. In this study, nitrogen stable isotope analyses and an atmospheric chemistry model were used to estimate the contribution of major NH3 sources to particulate NH4+ in Tianjin, a megacity in North China Plain (NCP). Our research has implications for investigations of NH3 emission sources and relevant pollution control in Tianjin and NCP. Photograph by Libin Wu.
This article belongs to the collection Dedication to Roy Harrison.