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Johan Boman

Professor

Johan Boman
Professor
johan.boman@gu.se
+46 31 786 9009
0766-229009

Room number: 4244
Postal Address: Kemigården 4, 412 96 Göteborg
Visiting Address: Kemigården 4 , 412 96 Göteborg


Department of Chemistry & Molecular Biology (More Information)
Box 462
405 30 Göteborg
www.cmb.gu.se
inst.kmb@cmb.gu.se
Fax: +46 31 786 2599

Visiting Address: Medicinaregatan 9 C , 405 30 Göteborg

About Johan Boman

Contact details

Kemigården 4 (the Chalmers Johanneberg area), room 4244

Research

My research time is devoted to environmental science, with special focus on trace elements in the outer environment. Most of the projects are centered on application of the Energy Dispersive X-Ray Fluorescence (EDXRF) analysis technique. This is a nondestructive, multi-elemental technique were elements can be detected down to picogram levels. Applications are mainly dealing with field measurement studies of the air quality in several parts of the world. Currently the research is financed by Swedish international development agency (Sida) and the research council (VR) for studies in Kenya and Egypt.

The EDXRF technique is also being developed for new applications, to gain better detection levels and to combine the XRF analysis with other analytical techniques.


X-ray flourescence

The objectives are to expand the operational possibilities of the Energy Dispersive X-Ray Fluorescence (EDXRF) spectrometers.

Currently there are two XRF spectrometers available for our research. Both instruments are laboratory built for best possible adoption to the needs of different projects. Both spectrometers are used for multi-elemental, non-destructive analysis of trace elements in the samples.

The EDXRF is based on a three axial geometry in order to reduce the background in the obtained spectra, thus reaching low detection limits. This spectrometer can be used for analysis of almost all kind of samples. The geometry of the spectrometer may be further optimized and vacuum will be used in the future to further lower detection limits.

To reach even lower detection limits and be able to use very minute amounts of sample mass the Total reflection X-Ray Fluorescence (TXRF) spectrometer is used. In this spectrometer the geometry is changed so that the incoming x-rays are totally reflected on a flat sample support surface. This is achieved when the impinging angle is below a certain critical angle. The critical angle is dependent on both the reflector material and the energy of the x-rays. This optimized setup allows detection of elements in the pictogram range. By testing different materials for the reflector/sample holder and special treatments of the reflector surface for different purposes, the analysis can be improved further.

Ideas exist to develop XRF spectrometers for online analysis of small aerosol particles as well as combining the XRF instrumentation with other analytical techniques available and developed in the research group.


Teaching

I am one of the Directors of studies at the department and I teach on some of our courses. For example:

Aerosols/Aerosoler (KEM720)
Analytical chemistry 1/Analytisk kemi 1 (KEM070)
Advanced analytical chemistry/Avancerad analytisk kemi (KEM081)
Energy and environment/Energi och miljö (ES2417)
Environmental chemistry/Miljökemi (KEM490)


For more information on these courses please refer to the platform GUL.


Commissions

  • Chair of the European Conference on X-Ray spectrometry (EXRS2016), in Gothenburg, June 2016.
  • Member of the assessment team of a proposed Masters’ programme in climate strategy to start at Lund University, Lund, Sweden. October 2009.
  • Main organizer and chair of the 13th TXRF conference in Göteborg, Sweden in June 2009.
  • Head of Atmospheric Science Division, Department of Chemistry and molecular biology, University of Gothenburg, January 2007 –
  • Member of the steering committee of Chalmers Faculty Club, Göteborg, 2007 –
  • Member of CRAICC (Cryosphere-Atmosphere Interactions in a Changing Arctic Climate), one of three new Nordic Centres of Excellence within the Top-level Research Initiative’s programme "Interaction between Climate Change and the Cryosphere". June 2010
  • Organiser of the 1st workshop on “Environmental challenges of Egypt – Assessment of some Inorganic pollutants in Cairo’s Air Using X-ray Fluorescence Techniques” in Cairo, Egypt. July 2010.

 

Latest publications

Identification of elemental composition of PM2.5 collected in Makkah, Saudi Arabia, using EDXRF
Abdallah A. Shaltout, Johan Boman, Mohammad E. Alsulimane
X-Ray Spectrometry, Journal article 2017
Journal article

Environmental implications of high metal content in soils of a titanium mining zone in Kenya
David M. Maina, Douglas M. Ndirangu, Michael M. Mangala, Johan Boman, Keith Shepherd et al.
Environmental Science and Pollution Research, Journal article 2016
Journal article

Photochemical smog in China: scientific challenges and implications for air-quality policies
Mattias Hallquist, John Munthe, Min Hu, Tao Wang, Chak K. Chan et al.
National Science Review, Journal article 2016
Journal article

Spectroscopic investigation of PM2.5 collected at industrial, residential and traffic sites in Taif, Saudi Arabia
Abdallah Shaltout, Johan Boman, Zuhair F. Shehadeh, Dhaif-allah R. Al-Malawi, O.M. Hemeda et al.
Journal of Aerosol Science, Journal article 2015
Journal article

Showing 1 - 10 of 47

2017

Identification of elemental composition of PM2.5 collected in Makkah, Saudi Arabia, using EDXRF
Abdallah A. Shaltout, Johan Boman, Mohammad E. Alsulimane
X-Ray Spectrometry, Journal article 2017
Journal article

2016

Environmental implications of high metal content in soils of a titanium mining zone in Kenya
David M. Maina, Douglas M. Ndirangu, Michael M. Mangala, Johan Boman, Keith Shepherd et al.
Environmental Science and Pollution Research, Journal article 2016
Journal article

Photochemical smog in China: scientific challenges and implications for air-quality policies
Mattias Hallquist, John Munthe, Min Hu, Tao Wang, Chak K. Chan et al.
National Science Review, Journal article 2016
Journal article

2015

Spectroscopic investigation of PM2.5 collected at industrial, residential and traffic sites in Taif, Saudi Arabia
Abdallah Shaltout, Johan Boman, Zuhair F. Shehadeh, Dhaif-allah R. Al-Malawi, O.M. Hemeda et al.
Journal of Aerosol Science, Journal article 2015
Journal article

2014

Showing 1 - 10 of 47

Page Manager: Katleen Burm|Last update: 9/20/2013
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