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Size-segregated urban aerosol characterization by electron microscopy and dynamic light scattering and influence of sample preparation

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027162%3A_____%2F18%3AN0000231" target="_blank" >RIV/00027162:_____/18:N0000231 - isvavai.cz</a>

  • Alternative codes found

    RIV/68081731:_____/18:00494587 RIV/00216208:11310/18:10378428

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/pii/S135223101830075X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S135223101830075X?via%3Dihub</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.atmosenv.2018.02.004" target="_blank" >10.1016/j.atmosenv.2018.02.004</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Size-segregated urban aerosol characterization by electron microscopy and dynamic light scattering and influence of sample preparation

  • Original language description

    Size-segregated particulate matter (PM) is frequently used in chemical and toxicological studies. Nevertheless, toxicological in vitro studies working with the whole particles often lack a proper evaluation of PM real size distribution and characterization of agglomeration under the experimental conditions. In this study, changes in particle size distributions during the PM sample manipulation and also semiquantitative elemental composition of single particles were evaluated. Coarse (1–10 μm), upper accumulation (0.5–1 μm), lower accumulation (0.17–0.5 μm), and ultrafine (< 0.17 μm) PM fractions were collected by high volume cascade impactor in Prague city center. Particles were examined using electron microscopy and their elemental composition was determined by energy dispersive X-ray spectroscopy. Larger or smaller particles, not corresponding to the impaction cut points, were found in all fractions, as they occur in agglomerates and are impacted according to their aerodynamic diameter. Elemental composition of particles in size-segregated fractions varied significantly. Nssoot occurred in all size fractions. Metallic nanospheres were found in accumulation fractions, but not in ultrafine fraction where ns-soot, carbonaceous particles, and inorganic salts were identified. Dynamic light scattering was used to measure particle size distribution in water and in cell culture media. PM suspension of lower accumulation fraction in water agglomerated after freezing/thawing the sample, and the agglomerates were disrupted by subsequent sonication. Ultrafine fraction did not agglomerate after freezing/thawing the sample. Both lower accumulation and ultrafine fractions were stable in cell culture media with fetal bovine serum, while high agglomeration occurred in media without fetal bovine serum as measured during 24 h.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    30304 - Public and environmental health

Result continuities

  • Project

    <a href="/en/project/GBP503%2F12%2FG147" target="_blank" >GBP503/12/G147: Centre for studies on toxicity of nanoparticles</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Atmospheric Environment

  • ISSN

    1352-2310

  • e-ISSN

    1873-2844

  • Volume of the periodical

    178

  • Issue of the periodical within the volume

    April

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    10

  • Pages from-to

    181-190

  • UT code for WoS article

    000428104200020

  • EID of the result in the Scopus database