The use of transmission electron microscopy with scanning mobility particle size spectrometry for an enhanced understanding of the physical characteristics of aerosol particles generated with a flow tube reactor
Aerosol particles are found throughout the atmosphere with considerable variety in morphological characteristics and chemical composition. Identifying and characterizing these particle attributes is a significant step toward improving our understanding of atmospheric chemistry. Many methods exist fo...
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| Veröffentlicht in: | Aerosol science and technology 2023-04, Vol.57 (4), p.279-295 |
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| creator | Tackman, Emma C. Higgins, Devon N. Kerecman, Devan E. Ott, Emily-Jean E. Johnston, Murray V. Freedman, Miriam Arak |
| description | Aerosol particles are found throughout the atmosphere with considerable variety in morphological characteristics and chemical composition. Identifying and characterizing these particle attributes is a significant step toward improving our understanding of atmospheric chemistry. Many methods exist for measuring the size and spreading of Aitken mode particles, but there are few studies rigorously comparing the results generated between approaches in this field. Here, we compare two methods for assessing aerosol particles - scanning mobility particle size spectrometry (SMPS) and transmission electron microscopy (TEM). Aitken mode particles consisting of salt seed particles and seed particles coated with α-pinene secondary organic material were produced in a flow tube reactor. The same populations of particles were analyzed using both techniques to facilitate direct comparison. For ammonium sulfate particles impacted onto carbon and Si TEM substrates, diameters increased by +0% to +30% when compared to the suspended electrical mobility diameters, an unexpectedly wide range for a single component system. Coated particles had unpredictable diameter differences, sometimes evaluated at larger and sometimes smaller sizes after impaction when compared to the corresponding SMPS electrical mobility diameter, from −34% to +60%. While all particles were generally round in shape, variation in particle morphology was also observed in coated samples. Between 0% and 98% of particles displayed obvious phase separation suggesting more population-level diversity than expected from these particle generation processes. Characterizing the differences between TEM and SMPS results better elucidates the role of a substrate where present and shows nonequivalence in particle size distributions obtained from different instruments.
Copyright © 2023 American Association for Aerosol Research |
| doi_str_mv | 10.1080/02786826.2023.2173999 |
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Copyright © 2023 American Association for Aerosol Research</description><subject>Aerosol particles</subject><subject>Aerosol research</subject><subject>Aerosols</subject><subject>Ammonium</subject><subject>Ammonium sulfate</subject><subject>Atmospheric chemistry</subject><subject>Chemical composition</subject><subject>Coated particles</subject><subject>Diameters</subject><subject>Electron microscopy</subject><subject>Jonathan P. Reid</subject><subject>Measuring instruments</subject><subject>Mobility</subject><subject>Morphology</subject><subject>Particle size</subject><subject>Particle size distribution</subject><subject>Phase separation</subject><subject>Physical properties</subject><subject>Reactors</subject><subject>Scientific imaging</subject><subject>Silicon substrates</subject><subject>Spectrometry</subject><subject>Substrates</subject><subject>Sulfate particles</subject><subject>Sulfates</subject><subject>Transmission electron microscopy</subject><issn>0278-6826</issn><issn>1521-7388</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp9kc1q3TAQhU1pobdpH6Eg6No3-rEteZcS-hMIZJOuhSyPYwVbckYyF_c1-0KVc9Mus5EEOuc7w5yi-MzokVFFLymXqlG8OXLKxZEzKdq2fVMcWM1ZKYVSb4vDril30fviQ4yPlFImOTsUf-5HIGsEEgaS0Pg4uxhd8AQmsAnzY3YWQ7Rh2cjJpZFEa7x3_oHMoXOTSxtZDCZnJyDR_c7H8mycIeFGhoDEZJgfjbfQk9X3gDEZ3--EPTPHL-MWnTUTsaNBYxOgixkY938DOTxM_zMieQAPaFKGPY9jyDCFE0lrBwQhuwN-LN4NZorw6eW-KH59_3Z__bO8vftxc_31trRC1akUoq6MsLy3cpBVrTpu7cAaGCSrKtqIVnIpG9l3bSVU10polGmVFZyqvm47Iy6KL2fuguFphZj0Y1jR50idnS2vm1qJrKrPqn2NEWHQC7rZ4KYZ1Xt_-l9_eu9Pv_SXfVdnn_N5i7M5BZx6ncw2BRxyU9ZFLV5H_AULAqhh</recordid><startdate>20230403</startdate><enddate>20230403</enddate><creator>Tackman, Emma C.</creator><creator>Higgins, Devon N.</creator><creator>Kerecman, Devan E.</creator><creator>Ott, Emily-Jean E.</creator><creator>Johnston, Murray V.</creator><creator>Freedman, Miriam Arak</creator><general>Taylor & Francis</general><general>Taylor & Francis Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>7TG</scope><scope>8FD</scope><scope>FR3</scope><scope>KL.</scope><orcidid>https://orcid.org/0000-0002-3490-7140</orcidid><orcidid>https://orcid.org/0000-0001-9529-8660</orcidid></search><sort><creationdate>20230403</creationdate><title>The use of transmission electron microscopy with scanning mobility particle size spectrometry for an enhanced understanding of the physical characteristics of aerosol particles generated with a flow tube reactor</title><author>Tackman, Emma C. ; Higgins, Devon N. ; Kerecman, Devan E. ; Ott, Emily-Jean E. ; Johnston, Murray V. ; Freedman, Miriam Arak</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c385t-3354a3c2dc7f7458b2ccf16ef71440639727767db9438b97e68a98c3208d59ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Aerosol particles</topic><topic>Aerosol research</topic><topic>Aerosols</topic><topic>Ammonium</topic><topic>Ammonium sulfate</topic><topic>Atmospheric chemistry</topic><topic>Chemical composition</topic><topic>Coated particles</topic><topic>Diameters</topic><topic>Electron microscopy</topic><topic>Jonathan P. Reid</topic><topic>Measuring instruments</topic><topic>Mobility</topic><topic>Morphology</topic><topic>Particle size</topic><topic>Particle size distribution</topic><topic>Phase separation</topic><topic>Physical properties</topic><topic>Reactors</topic><topic>Scientific imaging</topic><topic>Silicon substrates</topic><topic>Spectrometry</topic><topic>Substrates</topic><topic>Sulfate particles</topic><topic>Sulfates</topic><topic>Transmission electron microscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Tackman, Emma C.</creatorcontrib><creatorcontrib>Higgins, Devon N.</creatorcontrib><creatorcontrib>Kerecman, Devan E.</creatorcontrib><creatorcontrib>Ott, Emily-Jean E.</creatorcontrib><creatorcontrib>Johnston, Murray V.</creatorcontrib><creatorcontrib>Freedman, Miriam Arak</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Aerosol science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Tackman, Emma C.</au><au>Higgins, Devon N.</au><au>Kerecman, Devan E.</au><au>Ott, Emily-Jean E.</au><au>Johnston, Murray V.</au><au>Freedman, Miriam Arak</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The use of transmission electron microscopy with scanning mobility particle size spectrometry for an enhanced understanding of the physical characteristics of aerosol particles generated with a flow tube reactor</atitle><jtitle>Aerosol science and technology</jtitle><date>2023-04-03</date><risdate>2023</risdate><volume>57</volume><issue>4</issue><spage>279</spage><epage>295</epage><pages>279-295</pages><issn>0278-6826</issn><eissn>1521-7388</eissn><abstract>Aerosol particles are found throughout the atmosphere with considerable variety in morphological characteristics and chemical composition. Identifying and characterizing these particle attributes is a significant step toward improving our understanding of atmospheric chemistry. Many methods exist for measuring the size and spreading of Aitken mode particles, but there are few studies rigorously comparing the results generated between approaches in this field. Here, we compare two methods for assessing aerosol particles - scanning mobility particle size spectrometry (SMPS) and transmission electron microscopy (TEM). Aitken mode particles consisting of salt seed particles and seed particles coated with α-pinene secondary organic material were produced in a flow tube reactor. The same populations of particles were analyzed using both techniques to facilitate direct comparison. For ammonium sulfate particles impacted onto carbon and Si TEM substrates, diameters increased by +0% to +30% when compared to the suspended electrical mobility diameters, an unexpectedly wide range for a single component system. Coated particles had unpredictable diameter differences, sometimes evaluated at larger and sometimes smaller sizes after impaction when compared to the corresponding SMPS electrical mobility diameter, from −34% to +60%. While all particles were generally round in shape, variation in particle morphology was also observed in coated samples. Between 0% and 98% of particles displayed obvious phase separation suggesting more population-level diversity than expected from these particle generation processes. Characterizing the differences between TEM and SMPS results better elucidates the role of a substrate where present and shows nonequivalence in particle size distributions obtained from different instruments.
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| subjects | Aerosol particles Aerosol research Aerosols Ammonium Ammonium sulfate Atmospheric chemistry Chemical composition Coated particles Diameters Electron microscopy Jonathan P. Reid Measuring instruments Mobility Morphology Particle size Particle size distribution Phase separation Physical properties Reactors Scientific imaging Silicon substrates Spectrometry Substrates Sulfate particles Sulfates Transmission electron microscopy |
| title | The use of transmission electron microscopy with scanning mobility particle size spectrometry for an enhanced understanding of the physical characteristics of aerosol particles generated with a flow tube reactor |
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