TY - JOUR
T1 - Extracting dust from soil: A simple solution to a tricky task
AU - Ljung, Karin
AU - Torin, A.
AU - Smirk, Michael
AU - Maley, Fiona
AU - Cook, Angus
AU - Weinstein, Philip
PY - 2008
Y1 - 2008
N2 - Air quality is commonly assessed by the ambient concentration of airborne particles sized smaller than 10 mu m (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 mu m 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. (C) 2008 Elsevier B.V. All rights reserved.
AB - Air quality is commonly assessed by the ambient concentration of airborne particles sized smaller than 10 mu m (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 mu m 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. (C) 2008 Elsevier B.V. All rights reserved.
U2 - 10.1016/j.scitotenv.2008.09.007
DO - 10.1016/j.scitotenv.2008.09.007
M3 - Article
VL - 407
SP - 589
EP - 593
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
ER -