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A mini-sampler for welding aerosol mounted in close vicinity of the mouth/nose
Stockholm University, Faculty of Science, Department of Applied Environmental Science (ITM).
2009 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 151, no 1, 012041- p.Article in journal (Refereed) Published
Abstract [en]

A small personal aerosol mini-sampler to be used inside modern welding visors has been developed. The main object of the mini-sampler has been to sample manganese. The sampler is based on commercially available 13 mm filter holders but modified to incorporate an inlet nozzle made of aluminium. The nominal flow rate of the mini-sampler is 0,75 l/min. The sampler is to be worn mounted on a headset, modified from professional microphone headsets. The headset mounting arrangement was accepted by the welders. The sampling bias of the mini sampler versus the IOM sampler depends on the coarseness of the sampled aerosol. At the lowest concentration ratio of the open-face 25 mm filter holder to the IOM sampler equal to 0,65, the bias of the mini sampler is approximately -26% versus the IOM. The RMS sampling bias of the mini sampler versus the IOM sampler for manganese is -4,6%. The inhalable fraction of welding aerosol mass consists only of 25-55% of welding fume. The rest of the mass is made up of spatter particles and grinding particles. For manganese generally more than 65% is found in the fume.

Place, publisher, year, edition, pages
2009. Vol. 151, no 1, 012041- p.
Keyword [en]
Environmental science
National Category
Biophysics Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-19051DOI: 10.1088/1742-6596/151/1/012041OAI: oai:DiVA.org:su-19051DiVA: diva2:185574
Conference
Inhaled Particles X, 23–25 September 2008, Manchester
Available from: 2009-02-20 Created: 2009-02-20 Last updated: 2012-06-27Bibliographically approved

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Lidén, Göran
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