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Dedication to Roy Harrison

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: 31 Jan 2025

EN24041Solubility and dissolution kinetics of particle-bound metals in a surrogate lung fluid

Sara D’Aronco, Valerio Di Marco, Alberto Gambalunga, Federica Chiara, Andrea Trevisan and Chiara Giorio 0000-0001-7821-7398

An illustration of aerosol transportation from the environment into the epithelial lining fluid where it can be partly solubilised.

Environmental context. Metals in airborne particles can interact with lung fluids once particles are inhaled. Water solubility of particle-bound metals is often used to define their bioavailability. We show that particle-bound metals exhibit a complex dissolution kinetics in a surrogate lung fluid, their solubility and dissolution kinetics are driven by the fluid composition, and only to a minor extent by atmospheric aqueous phase processing of aerosols. (Image credit: Francesco Battaglia and Chiara Giorio.)

This article belongs to the collection: 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 0009-0007-9328-5541, Jianyun Sun, Yufang Fan and Yongjun Li

Two pie charts detailing pollution sources for Chengguan (left) and Xigu (right) districts.

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 0009-0006-3898-1192, Yiwen Zhang, Yunting Xiao, Jialei Zhu, Zongbo Shi 0000-0002-7157-543X, Yuantao Wang, Hong Xu, Wei Hu, Junjun Deng, Miao Tang and Pingqing Fu

A photograph of Jingang Bridge with the Tianjin Eye behind, shrouded in air pollution.

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.