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Development of an H-TDMA for long-term unattended measurement of the hygroscopic properties of atmospheric aerosol particles

Fors, Erik LU ; Swietlicki, Erik LU ; Sjögren, Staffan LU ; Löndahl, Jakob LU ; Nyman, Margareta and Svenningsson, Birgitta LU (2009) In Atmospheric Measurement Techniques 2(1). p.313-318
Abstract
A new hygroscopic tandem differential mobility analyzer (H-TDMA) has been constructed at Lund University within the frameworks of the EU FP6 Infrastructure Project EUSAAR (www.eusaar.org). The aim of this coordinated H-TDMA development is to design and evaluate a new generation of H-TDMAs that are capable of conducting long term measurements of the hygroscopic growth and state of mixing of sub-micrometer atmospheric aerosol particles at the EUSAAR aerosol super-sites across Europe. The H-TDMA constructed for this project has been validated with respect to hygroscopic growth factor, stability of relative humidity (RH), temperature stability and its ability to operate unattended for longer periods of time. When measuring growth factors of... (More)
A new hygroscopic tandem differential mobility analyzer (H-TDMA) has been constructed at Lund University within the frameworks of the EU FP6 Infrastructure Project EUSAAR (www.eusaar.org). The aim of this coordinated H-TDMA development is to design and evaluate a new generation of H-TDMAs that are capable of conducting long term measurements of the hygroscopic growth and state of mixing of sub-micrometer atmospheric aerosol particles at the EUSAAR aerosol super-sites across Europe. The H-TDMA constructed for this project has been validated with respect to hygroscopic growth factor, stability of relative humidity (RH), temperature stability and its ability to operate unattended for longer periods of time. When measuring growth factors of ammonium sulphate, the new H-TDMA system was found to measure within a growth factor deviation of +/- 0.05 compared to previously recorded data by Tang et al. (1994). The long term RH of the system has been found stable at 90.0% with a standard deviation of +/- 0.23% and an average temperature variability of the second DMA less than +/- 0.1 K. Daily automated ammonium sulphate measurements have validated the ambient measurements. The instrument is operated at the EMEP/EUSAAR background station Vavihill in the southern part of Sweden. (Less)
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type
Contribution to journal
publication status
published
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in
Atmospheric Measurement Techniques
volume
2
issue
1
pages
313 - 318
publisher
Copernicus Gesellschaft Mbh
external identifiers
  • wos:000278085900024
  • scopus:77956431649
ISSN
1867-1381
DOI
10.5194/amt-2-313-2009
language
English
LU publication?
yes
id
5c279b19-b4cf-4757-b11a-9043da898f3c (old id 1616446)
date added to LUP
2010-06-22 16:01:23
date last changed
2017-10-08 03:43:40
@article{5c279b19-b4cf-4757-b11a-9043da898f3c,
  abstract     = {A new hygroscopic tandem differential mobility analyzer (H-TDMA) has been constructed at Lund University within the frameworks of the EU FP6 Infrastructure Project EUSAAR (www.eusaar.org). The aim of this coordinated H-TDMA development is to design and evaluate a new generation of H-TDMAs that are capable of conducting long term measurements of the hygroscopic growth and state of mixing of sub-micrometer atmospheric aerosol particles at the EUSAAR aerosol super-sites across Europe. The H-TDMA constructed for this project has been validated with respect to hygroscopic growth factor, stability of relative humidity (RH), temperature stability and its ability to operate unattended for longer periods of time. When measuring growth factors of ammonium sulphate, the new H-TDMA system was found to measure within a growth factor deviation of +/- 0.05 compared to previously recorded data by Tang et al. (1994). The long term RH of the system has been found stable at 90.0% with a standard deviation of +/- 0.23% and an average temperature variability of the second DMA less than +/- 0.1 K. Daily automated ammonium sulphate measurements have validated the ambient measurements. The instrument is operated at the EMEP/EUSAAR background station Vavihill in the southern part of Sweden.},
  author       = {Fors, Erik and Swietlicki, Erik and Sjögren, Staffan and Löndahl, Jakob and Nyman, Margareta and Svenningsson, Birgitta},
  issn         = {1867-1381},
  language     = {eng},
  number       = {1},
  pages        = {313--318},
  publisher    = {Copernicus Gesellschaft Mbh},
  series       = {Atmospheric Measurement Techniques},
  title        = {Development of an H-TDMA for long-term unattended measurement of the hygroscopic properties of atmospheric aerosol particles},
  url          = {http://dx.doi.org/10.5194/amt-2-313-2009},
  volume       = {2},
  year         = {2009},
}