Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan

Abstract The aerosol oxidative potential (OP) is considered to better represent the acute health hazards of aerosols than the mass concentration of fine particulate matter (PM2.5). The proposed major contributors to OP are water soluble transition metals and organic compounds, but the relative magni...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Mizuo Kajino, Hiroyuki Hagino, Yuji Fujitani, Tazuko Morikawa, Tetsuo Fukui, Kazunari Onishi, Tomoaki Okuda, Yasuhito Igarashi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5dd9bb8f79f442dbb1229ef1419f42af
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5dd9bb8f79f442dbb1229ef1419f42af
record_format	dspace
spelling	oai:doaj.org-article:5dd9bb8f79f442dbb1229ef1419f42af2021-12-02T17:04:05ZSimulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan10.1038/s41598-021-85894-z2045-2322https://doaj.org/article/5dd9bb8f79f442dbb1229ef1419f42af2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85894-zhttps://doaj.org/toc/2045-2322Abstract The aerosol oxidative potential (OP) is considered to better represent the acute health hazards of aerosols than the mass concentration of fine particulate matter (PM2.5). The proposed major contributors to OP are water soluble transition metals and organic compounds, but the relative magnitudes of these compounds to the total OP are not yet fully understood. In this study, as the first step toward the numerical prediction of OP, the cumulative OP (OPtm) based on the top five key transition metals, namely, Cu, Mn, Fe, V, and Ni, was defined. The solubilities of metals were assumed constant over time and space based on measurements. Then, the feasibility of its prediction was verified by comparing OPtm values based on simulated metals to that based on observed metals in East Asia. PM2.5 typically consists of primary and secondary species, while OPtm* only represents primary species. This disparity caused differences in the domestic contributions of PM2.5 and OPtm, especially in large cities in western Japan. The annual mean domestic contributions of PM2.5 were 40%, while those of OPtm ranged from 50 to 55%. Sector contributions to the OPtm* emissions in Japan were also assessed. The main important sectors were the road brake and iron–steel industry sectors, followed by power plants, road exhaust, and railways.Mizuo KajinoHiroyuki HaginoYuji FujitaniTazuko MorikawaTetsuo FukuiKazunari OnishiTomoaki OkudaYasuhito IgarashiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mizuo Kajino Hiroyuki Hagino Yuji Fujitani Tazuko Morikawa Tetsuo Fukui Kazunari Onishi Tomoaki Okuda Yasuhito Igarashi Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan
description	Abstract The aerosol oxidative potential (OP) is considered to better represent the acute health hazards of aerosols than the mass concentration of fine particulate matter (PM2.5). The proposed major contributors to OP are water soluble transition metals and organic compounds, but the relative magnitudes of these compounds to the total OP are not yet fully understood. In this study, as the first step toward the numerical prediction of OP, the cumulative OP (OPtm) based on the top five key transition metals, namely, Cu, Mn, Fe, V, and Ni, was defined. The solubilities of metals were assumed constant over time and space based on measurements. Then, the feasibility of its prediction was verified by comparing OPtm values based on simulated metals to that based on observed metals in East Asia. PM2.5 typically consists of primary and secondary species, while OPtm* only represents primary species. This disparity caused differences in the domestic contributions of PM2.5 and OPtm, especially in large cities in western Japan. The annual mean domestic contributions of PM2.5 were 40%, while those of OPtm ranged from 50 to 55%. Sector contributions to the OPtm* emissions in Japan were also assessed. The main important sectors were the road brake and iron–steel industry sectors, followed by power plants, road exhaust, and railways.
format	article
author	Mizuo Kajino Hiroyuki Hagino Yuji Fujitani Tazuko Morikawa Tetsuo Fukui Kazunari Onishi Tomoaki Okuda Yasuhito Igarashi
author_facet	Mizuo Kajino Hiroyuki Hagino Yuji Fujitani Tazuko Morikawa Tetsuo Fukui Kazunari Onishi Tomoaki Okuda Yasuhito Igarashi
author_sort	Mizuo Kajino
title	Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan
title_short	Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan
title_full	Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan
title_fullStr	Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan
title_full_unstemmed	Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan
title_sort	simulation of the transition metal-based cumulative oxidative potential in east asia and its emission sources in japan
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5dd9bb8f79f442dbb1229ef1419f42af
work_keys_str_mv	AT mizuokajino simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT hiroyukihagino simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT yujifujitani simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT tazukomorikawa simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT tetsuofukui simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT kazunarionishi simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT tomoakiokuda simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan AT yasuhitoigarashi simulationofthetransitionmetalbasedcumulativeoxidativepotentialineastasiaanditsemissionsourcesinjapan
_version_	1718381849981485056

Simulation of the transition metal-based cumulative oxidative potential in East Asia and its emission sources in Japan

Ejemplares similares