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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F11%3A00371139%21RIV12-AV0-67179843
rdf:type
n5:Vysledek skos:Concept
dcterms:description
Internal structures, hygroscopic properties and heterogeneous reactivity of mixed CH(3)SO(3)Na/NaCl particles were investigated using a combination of computer modeling and experimental approaches. Surfactant properties of CH(3)SO(3)(-) ions and their surface accumulation in wet, deliquesced particles were assessed using molecular dynamics (MD) simulations and surface tension measurements. Internal structures of dry CH(3)SO(3)Na/NaCl particles were investigated using scanning electron microscopy (SEM) assisted with X-ray microanalysis mapping, and time-of-flight secondary ion mass spectrometry (TOF-SIMS). The combination of these techniques shows that dry CH(3)SO(3)Na/NaCl particles are composed of a NaCl core surrounded by a CH(3)SO(3)Na shell. Hygroscopic growth, deliquescence and efflorescence phase transitions of mixed CH(3)SO(3)Na/NaCl particles were determined and compared to those of pure NaCl particles. These results indicate that particles undergo a two step deliquescence transition: first at similar to 69% relative humidity (RH) the CH(3)SO(3)Na shell takes up water, and then at similar to 75% RH the NaCl core deliquesces. Reactive uptake coefficients for the particle-HNO(3) heterogeneous reaction were determined at different CH(3)SO(3)Na/NaCl mixing ratios and RH. The net reaction probability decreased notably with increasing CH(3)SO(3)Na and at lower RH. Internal structures, hygroscopic properties and heterogeneous reactivity of mixed CH(3)SO(3)Na/NaCl particles were investigated using a combination of computer modeling and experimental approaches. Surfactant properties of CH(3)SO(3)(-) ions and their surface accumulation in wet, deliquesced particles were assessed using molecular dynamics (MD) simulations and surface tension measurements. Internal structures of dry CH(3)SO(3)Na/NaCl particles were investigated using scanning electron microscopy (SEM) assisted with X-ray microanalysis mapping, and time-of-flight secondary ion mass spectrometry (TOF-SIMS). The combination of these techniques shows that dry CH(3)SO(3)Na/NaCl particles are composed of a NaCl core surrounded by a CH(3)SO(3)Na shell. Hygroscopic growth, deliquescence and efflorescence phase transitions of mixed CH(3)SO(3)Na/NaCl particles were determined and compared to those of pure NaCl particles. These results indicate that particles undergo a two step deliquescence transition: first at similar to 69% relative humidity (RH) the CH(3)SO(3)Na shell takes up water, and then at similar to 75% RH the NaCl core deliquesces. Reactive uptake coefficients for the particle-HNO(3) heterogeneous reaction were determined at different CH(3)SO(3)Na/NaCl mixing ratios and RH. The net reaction probability decreased notably with increasing CH(3)SO(3)Na and at lower RH.
dcterms:title
Internal structure, hygroscopic and reactive properties of mixed sodium methanesulfonate-sodium chloride particles Internal structure, hygroscopic and reactive properties of mixed sodium methanesulfonate-sodium chloride particles
skos:prefLabel
Internal structure, hygroscopic and reactive properties of mixed sodium methanesulfonate-sodium chloride particles Internal structure, hygroscopic and reactive properties of mixed sodium methanesulfonate-sodium chloride particles
skos:notation
RIV/67179843:_____/11:00371139!RIV12-AV0-67179843
n5:predkladatel
n6:ico%3A67179843
n3:aktivita
n15:Z n15:P
n3:aktivity
P(LC06010), P(LC512), P(ME09062), Z(AV0Z40550506), Z(AV0Z60870520)
n3:cisloPeriodika
25
n3:dodaniDat
n8:2012
n3:domaciTvurceVysledku
Minofar, Babak
n3:druhVysledku
n18:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
205402
n3:idVysledku
RIV/67179843:_____/11:00371139
n3:jazykVysledku
n17:eng
n3:klicovaSlova
sea-salt particles; molecular-dynamics simulations; surface-tension measurements; liquid-vapor interface; x-ray microanalysis; heterogeneous reaction; nitric-acid; gaseous HNO3; trophospheric chemistry; airwater interface
n3:klicoveSlovo
n4:molecular-dynamics%20simulations n4:heterogeneous%20reaction n4:surface-tension%20measurements n4:sea-salt%20particles n4:trophospheric%20chemistry n4:liquid-vapor%20interface n4:x-ray%20microanalysis n4:nitric-acid n4:airwater%20interface n4:gaseous%20HNO3
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[78410E10EB76]
n3:nazevZdroje
Physical Chemistry Chemical Physics
n3:obor
n19:EH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
11
n3:projekt
n12:LC512 n12:LC06010 n12:ME09062
n3:rokUplatneniVysledku
n8:2011
n3:svazekPeriodika
13
n3:tvurceVysledku
Minofar, Babak Gilles, M. K. Jungwirth, P. Cain, J. P. Desyaterik, Y. Hopkins, R. J. Dames, E. Laskin, A. Liu, Y. Zhu, Z. Wang, H.
n3:wos
000291656900006
n3:zamer
n9:AV0Z60870520 n9:AV0Z40550506
s:issn
1463-9076
s:numberOfPages
12
n11:doi
10.1039/c1cp20444k