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Extracting dust from soil: A simple solution to a tricky task
KTH, School of Chemical Science and Engineering (CHE), Chemistry. Lung Institute of Western Australia, Australia.
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2008 (English)In: Science of the Total Environment, Vol. 407, no 1, 589-593 p.Article in journal (Refereed) Published
Abstract [en]

Air quality is commonly assessed by the ambient concentration of airborne particles sized smaller than 10 μm (PM10). However, in addition to concentration, particle shape as well as the type and bioaccessibility of elements adsorbed to this particulate fraction are likely to be related to subsequent respiratory health effects. In order to investigate this relationship, a relatively large mass of the relevant size fraction is needed since sample preparation is necessary prior to analysis. Most existing methods for sampling dust have been developed for analysing the dust directly, without prior handling or digestion. In order to provide sufficient material to be used for subsequent bioaccessibility analysis, these methods require repetitive and time consuming sampling as well as special equipment and procedures which are high in both cost and maintenance. This paper describes an inexpensive and relatively simple procedure for extracting the PM10 fraction from soil to be used for lung bioaccessibility studies. The method described involves dry and wet sieving in order to exclude larger size fractions as far as possible. Vacuum filtering of the wet-sieved soil solution through a 10 μm mesh was then employed to extract the required fraction. In order to avoid frequent blocking of the mesh, Stokes's law was applied in the construction of a tube which enables separation of the solution holding the smallest fraction.

Place, publisher, year, edition, pages
2008. Vol. 407, no 1, 589-593 p.
Keyword [en]
Dust extraction, Lung bioaccessibility, Particle size fractionation, PM10, Soil, Stokes's law, Air quality, Biological organs, Concentration (process), Dust, Filtration, Permanent magnets, Soil moisture, Soils, Well equipment, PM, Air pollution, sulfate, bioavailability, extraction method, filter, health impact, particle size, respiratory disease, sieving, soil emission, article, cost benefit analysis, environmental factor, environmental temperature, medical instrumentation, priority journal, soil analysis, soil pollution, Air, Environmental Monitoring, Solutions
National Category
Environmental Sciences
URN: urn:nbn:se:kth:diva-154284DOI: 10.1016/j.scitotenv.2008.09.007ISI: 000261877900055PubMedID: 18845318ScopusID: 2-s2.0-56249128199OAI: diva2:758691

QC 20141028

Available from: 2014-10-28 Created: 2014-10-17 Last updated: 2014-10-28Bibliographically approved

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