Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols

A single-particle mass spectrometer (SPMS) with laser ionization was constructed to determine the chemical composition of single particles in real time. The technique was evaluated using various polystyrene latex particles with different sizes (125 nm, 300 nm, 700 nm, and 1000 nm); NaCl, KCl, MgCO&l...

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Autores principales:	Hee-joo Cho, Joonwoo Kim, Nohhyeon Kwak, Heesung Kwak, Taewan Son, Donggeun Lee, Kihong Park
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	single-particle mass spectrometer combustion aerosols chemical signature laser ionization Medicine R
Acceso en línea:	https://doaj.org/article/6caa57e7ca2a452b83ebeb0b7d534aa4
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spelling	oai:doaj.org-article:6caa57e7ca2a452b83ebeb0b7d534aa42021-11-11T16:41:24ZApplication of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols10.3390/ijerph1821115801660-46011661-7827https://doaj.org/article/6caa57e7ca2a452b83ebeb0b7d534aa42021-11-01T00:00:00Zhttps://www.mdpi.com/1660-4601/18/21/11580https://doaj.org/toc/1661-7827https://doaj.org/toc/1660-4601A single-particle mass spectrometer (SPMS) with laser ionization was constructed to determine the chemical composition of single particles in real time. The technique was evaluated using various polystyrene latex particles with different sizes (125 nm, 300 nm, 700 nm, and 1000 nm); NaCl, KCl, MgCO<sub>3</sub>, CaCO<sub>3</sub>, and Al<sub>2</sub>O<sub>3</sub> particles with different chemical compositions; an internal mixture of NaCl and KCl; and an internal mixture of NaCl, KCl, and MgCl<sub>2</sub> with different mixing states. The results show that the SPMS can be useful for the determination of chemical characteristics and mixing states of single particles in real time. The SPMS was then applied to obtain the chemical signatures of various combustion aerosols (diesel engine exhaust, biomass burning (rice straw), coal burning, and cooking (pork)) based on their single-particle mass spectra. Elemental carbon (EC)-rich and EC-organic carbon (OC) particles were the predominant particle types identified in diesel engine exhaust, while K-rich and EC-OC-K particles were observed among rice straw burning emissions. Only one particle type (ash-rich particles) was detected among coal burning emissions. EC-rich and EC-OC particles were observed among pork burning particles. The single-particle mass spectra of the EC or OC types of particles differed among various combustion sources. The observed chemical signatures could be useful for rapidly identifying sources of atmospheric fine particles. In addition, the detected chemical signatures of the fine particles may be used to estimate their toxicity and to better understand their effects on human health.Hee-joo ChoJoonwoo KimNohhyeon KwakHeesung KwakTaewan SonDonggeun LeeKihong ParkMDPI AGarticlesingle-particle mass spectrometercombustion aerosolschemical signaturelaser ionizationMedicineRENInternational Journal of Environmental Research and Public Health, Vol 18, Iss 11580, p 11580 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	single-particle mass spectrometer combustion aerosols chemical signature laser ionization Medicine R
spellingShingle	single-particle mass spectrometer combustion aerosols chemical signature laser ionization Medicine R Hee-joo Cho Joonwoo Kim Nohhyeon Kwak Heesung Kwak Taewan Son Donggeun Lee Kihong Park Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols
description	A single-particle mass spectrometer (SPMS) with laser ionization was constructed to determine the chemical composition of single particles in real time. The technique was evaluated using various polystyrene latex particles with different sizes (125 nm, 300 nm, 700 nm, and 1000 nm); NaCl, KCl, MgCO<sub>3</sub>, CaCO<sub>3</sub>, and Al<sub>2</sub>O<sub>3</sub> particles with different chemical compositions; an internal mixture of NaCl and KCl; and an internal mixture of NaCl, KCl, and MgCl<sub>2</sub> with different mixing states. The results show that the SPMS can be useful for the determination of chemical characteristics and mixing states of single particles in real time. The SPMS was then applied to obtain the chemical signatures of various combustion aerosols (diesel engine exhaust, biomass burning (rice straw), coal burning, and cooking (pork)) based on their single-particle mass spectra. Elemental carbon (EC)-rich and EC-organic carbon (OC) particles were the predominant particle types identified in diesel engine exhaust, while K-rich and EC-OC-K particles were observed among rice straw burning emissions. Only one particle type (ash-rich particles) was detected among coal burning emissions. EC-rich and EC-OC particles were observed among pork burning particles. The single-particle mass spectra of the EC or OC types of particles differed among various combustion sources. The observed chemical signatures could be useful for rapidly identifying sources of atmospheric fine particles. In addition, the detected chemical signatures of the fine particles may be used to estimate their toxicity and to better understand their effects on human health.
format	article
author	Hee-joo Cho Joonwoo Kim Nohhyeon Kwak Heesung Kwak Taewan Son Donggeun Lee Kihong Park
author_facet	Hee-joo Cho Joonwoo Kim Nohhyeon Kwak Heesung Kwak Taewan Son Donggeun Lee Kihong Park
author_sort	Hee-joo Cho
title	Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols
title_short	Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols
title_full	Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols
title_fullStr	Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols
title_full_unstemmed	Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols
title_sort	application of single-particle mass spectrometer to obtain chemical signatures of various combustion aerosols
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/6caa57e7ca2a452b83ebeb0b7d534aa4
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Application of Single-Particle Mass Spectrometer to Obtain Chemical Signatures of Various Combustion Aerosols

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