Advanced

Ion-beam thermography analysis of the H2SO4-(NH4)2SO4 system in aerosol samples

Mentes, B. ; Papaspiropoulos, G. LU and Martinsson, B. G. LU (2000) In Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 168(4). p.533-542
Abstract

Ion-beam thermography (IBT) is used to determine the chemical composition of atmospheric aerosols. The aerosols are analyZed by a combination of four ion-beam techniques PIXE, PESA, pNRA and cPESA during thermography. These techniques monitor the concentrations of the available elements during the stepwise heating of the sample. For each element a thermogram, i.e., the concentration vs. temperature, is obtained. Vaporization of chemical compounds generated during heating will result in a decrease in concentration in the thermograms at temperatures that are characteristic for the compounds. The compounds are identified by the stoichiometric ratios and the characteristic vaporization temperatures (CVT). This paper deals with the analysis... (More)

Ion-beam thermography (IBT) is used to determine the chemical composition of atmospheric aerosols. The aerosols are analyZed by a combination of four ion-beam techniques PIXE, PESA, pNRA and cPESA during thermography. These techniques monitor the concentrations of the available elements during the stepwise heating of the sample. For each element a thermogram, i.e., the concentration vs. temperature, is obtained. Vaporization of chemical compounds generated during heating will result in a decrease in concentration in the thermograms at temperatures that are characteristic for the compounds. The compounds are identified by the stoichiometric ratios and the characteristic vaporization temperatures (CVT). This paper deals with the analysis of five different laboratory-produced aerosols with the following compositions: (NH4)2SO4, (NH4)1.5H0.5SO4, NH4HSO4, (NH4)0.5H1.5SO4 and H2SO4. All compounds were readily separated with respect to response in IBT analysis and the amount of water bound to the two most acidic compounds could be quantified.

(Less)
Please use this url to cite or link to this publication:
author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
volume
168
issue
4
pages
10 pages
publisher
Elsevier
external identifiers
  • scopus:0033704692
ISSN
0168-583X
DOI
10.1016/S0168-583X(00)00041-0
language
English
LU publication?
yes
id
83f5f0bf-efc1-48bc-93e9-9ee597bd3363
date added to LUP
2019-05-16 09:39:10
date last changed
2020-01-13 01:47:45
@article{83f5f0bf-efc1-48bc-93e9-9ee597bd3363,
  abstract     = {<p>Ion-beam thermography (IBT) is used to determine the chemical composition of atmospheric aerosols. The aerosols are analyZed by a combination of four ion-beam techniques PIXE, PESA, pNRA and cPESA during thermography. These techniques monitor the concentrations of the available elements during the stepwise heating of the sample. For each element a thermogram, i.e., the concentration vs. temperature, is obtained. Vaporization of chemical compounds generated during heating will result in a decrease in concentration in the thermograms at temperatures that are characteristic for the compounds. The compounds are identified by the stoichiometric ratios and the characteristic vaporization temperatures (CVT). This paper deals with the analysis of five different laboratory-produced aerosols with the following compositions: (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>, (NH<sub>4</sub>)<sub>1.5</sub>H<sub>0.5</sub>SO<sub>4</sub>, NH<sub>4</sub>HSO<sub>4</sub>, (NH<sub>4</sub>)<sub>0.5</sub>H<sub>1.5</sub>SO<sub>4</sub> and H<sub>2</sub>SO<sub>4</sub>. All compounds were readily separated with respect to response in IBT analysis and the amount of water bound to the two most acidic compounds could be quantified.</p>},
  author       = {Mentes, B. and Papaspiropoulos, G. and Martinsson, B. G.},
  issn         = {0168-583X},
  language     = {eng},
  month        = {01},
  number       = {4},
  pages        = {533--542},
  publisher    = {Elsevier},
  series       = {Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms},
  title        = {Ion-beam thermography analysis of the H<sub>2</sub>SO<sub>4</sub>-(NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> system in aerosol samples},
  url          = {http://dx.doi.org/10.1016/S0168-583X(00)00041-0},
  doi          = {10.1016/S0168-583X(00)00041-0},
  volume       = {168},
  year         = {2000},
}