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Title: The Impact of Sampling Medium and Environment on Particle Morphology

Sampling on different substrates is commonly used in laboratory and field studies to investigate the morphology and mixing state of aerosol particles. Our focus was on the transformations that can occur to the collected particles during storage, handling, and analysis. Particle samples were prepared by electrostatic deposition of size-classified sodium chloride, sulfuric acid, and coated soot aerosols on different substrates. The samples were inspected by electron microscopy before and after exposure to various environments. For coated soot, the imaging results were compared against mass-mobility measurements of airborne particles that underwent similar treatments. The extent of sample alteration ranged from negligible to major, depending on the environment, substrate, and particle composition. We discussed the implications of our findings for cases where morphology and the mixing state of particles must be preserved, and cases where particle transformations are desirable.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [2]
  1. Nanjing Univ. (China). Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering; New Jersey Inst. of Technology, Newark, NJ (United States). Dept. of Chemistry and Environmental Science
  2. New Jersey Inst. of Technology, Newark, NJ (United States). Dept. of Chemistry and Environmental Science; New Jersey Inst. of Technology, Newark, NJ (United States). Dept. of Chemical Biological and Pharmaceutical Engineering
  3. Nanjing Univ. (China). Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Publication Date:
Report Number(s):
BNL-203592-2018-JAAM
Journal ID: ISSN 2073-4433; ATMOCZ
Grant/Contract Number:
SC0012704
Type:
Accepted Manuscript
Journal Name:
Atmosphere (Basel)
Additional Journal Information:
Journal Name: Atmosphere (Basel); Journal Volume: 8; Journal Issue: 12; Journal ID: ISSN 2073-4433
Publisher:
MDPI
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 54 ENVIRONMENTAL SCIENCES; substrate; morphology; electron microscopy; aerosols; soot; sodium chloride; sulfuric acid; sampling
OSTI Identifier:
1436253

Chen, Chao, Enekwizu, Ogochukwu, Ma, Yan, Zakharov, Dmitry, and Khalizov, Alexei. The Impact of Sampling Medium and Environment on Particle Morphology. United States: N. p., Web. doi:10.3390/atmos8090162.
Chen, Chao, Enekwizu, Ogochukwu, Ma, Yan, Zakharov, Dmitry, & Khalizov, Alexei. The Impact of Sampling Medium and Environment on Particle Morphology. United States. doi:10.3390/atmos8090162.
Chen, Chao, Enekwizu, Ogochukwu, Ma, Yan, Zakharov, Dmitry, and Khalizov, Alexei. 2017. "The Impact of Sampling Medium and Environment on Particle Morphology". United States. doi:10.3390/atmos8090162. https://www.osti.gov/servlets/purl/1436253.
@article{osti_1436253,
title = {The Impact of Sampling Medium and Environment on Particle Morphology},
author = {Chen, Chao and Enekwizu, Ogochukwu and Ma, Yan and Zakharov, Dmitry and Khalizov, Alexei},
abstractNote = {Sampling on different substrates is commonly used in laboratory and field studies to investigate the morphology and mixing state of aerosol particles. Our focus was on the transformations that can occur to the collected particles during storage, handling, and analysis. Particle samples were prepared by electrostatic deposition of size-classified sodium chloride, sulfuric acid, and coated soot aerosols on different substrates. The samples were inspected by electron microscopy before and after exposure to various environments. For coated soot, the imaging results were compared against mass-mobility measurements of airborne particles that underwent similar treatments. The extent of sample alteration ranged from negligible to major, depending on the environment, substrate, and particle composition. We discussed the implications of our findings for cases where morphology and the mixing state of particles must be preserved, and cases where particle transformations are desirable.},
doi = {10.3390/atmos8090162},
journal = {Atmosphere (Basel)},
number = 12,
volume = 8,
place = {United States},
year = {2017},
month = {8}
}