Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 951070

Size-resolved surface active substances of atmospheric aerosol: reconsideration of the impact on cloud droplet formation


Kroflič, Ana: Frka, Sanja: Simmel, Martin: Wex, Heike: Grgić, Irena
Size-resolved surface active substances of atmospheric aerosol: reconsideration of the impact on cloud droplet formation // Environmental science & technology, 52 (2018), 16; 9179-9187 doi:10.1021/acs.est.8b02381 (međunarodna recenzija, članak, znanstveni)


CROSBI ID: 951070 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Size-resolved surface active substances of atmospheric aerosol: reconsideration of the impact on cloud droplet formation

Autori
Kroflič, Ana: Frka, Sanja: Simmel, Martin: Wex, Heike: Grgić, Irena

Izvornik
Environmental science & technology (0013-936X) 52 (2018), 16; 9179-9187

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Surfactants ; Atmospheric aerosols ; CNN ; Size-segregated ; Electrochemistry

Sažetak
Our current understanding of the importance of surface-active substances (SAS) on atmospheric aerosol cloud-forming efficiency is limited, as explicit data on the content of size-resolved ambient aerosol SAS, which are responsible for lowering the surface tension (σ) of activating droplets, are not available. We report on the first data comprising seasonal variability of size-segregated SAS concentrations in ambient aerosol particulate matter (PM). To assess the impact of SAS distribution within PM on cloud droplet activation and growth, a concept of surfactant activity was adopted and a parametrization developed ; i.e., surfactant activity factor (SAF) was defined, which allowed translation of experimental data for use in cloud parcel modeling. The results show that SAS-induced σ depression during cloud activation may affect droplet number ( Nd) as much as a 2-fold increase in particle number, whereas by considering also the size distribution of particulate SAS, Nd may increase for another 10%. This study underscores the importance of size-resolved SAS perspective on cloud activation, as data typically obtained from aqueous extracts of PM2.5 and PM10 may result in misleading conclusions about droplet growth due to large mass fractions of supermicron particles with SAS deficit and little or no influence on CCN and Nd.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Interdisciplinarne prirodne znanosti



POVEZANOST RADA


Ustanove
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Sanja Frka Milosavljević (autor)

Citiraj ovu publikaciju

Kroflič, Ana: Frka, Sanja: Simmel, Martin: Wex, Heike: Grgić, Irena
Size-resolved surface active substances of atmospheric aerosol: reconsideration of the impact on cloud droplet formation // Environmental science & technology, 52 (2018), 16; 9179-9187 doi:10.1021/acs.est.8b02381 (međunarodna recenzija, članak, znanstveni)
Kroflič, Ana: Frka, Sanja: Simmel, Martin: Wex, Heike: Grgić, Irena (2018) Size-resolved surface active substances of atmospheric aerosol: reconsideration of the impact on cloud droplet formation. Environmental science & technology, 52 (16), 9179-9187 doi:10.1021/acs.est.8b02381.
@article{article, year = {2018}, pages = {9179-9187}, DOI = {10.1021/acs.est.8b02381}, keywords = {Surfactants, Atmospheric aerosols, CNN, Size-segregated, Electrochemistry}, journal = {Environmental science and technology}, doi = {10.1021/acs.est.8b02381}, volume = {52}, number = {16}, issn = {0013-936X}, title = {Size-resolved surface active substances of atmospheric aerosol: reconsideration of the impact on cloud droplet formation}, keyword = {Surfactants, Atmospheric aerosols, CNN, Size-segregated, Electrochemistry} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus
  • MEDLINE


Citati





    Contrast
    Increase Font
    Decrease Font
    Dyslexic Font