Elemental characterisation and detection of heavy metals in house dusts collected from sites in South-East Queensland, Australia

Ayoko, Godwin, Bostrom, Thor, Lim, Yet-Hong, & Elgabir, Sohair (2012) Elemental characterisation and detection of heavy metals in house dusts collected from sites in South-East Queensland, Australia. In Morawska, Lidia (Ed.) Proceedings of the 10th International Healthy Buildings Conference 2012, Queensland University of Technology, Brisbane Convention & Exhibition Centre, Brisbane, Queensland, pp. 1-6.

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Knowledge of the elements present in house dusts is important in understanding potential health effects on humans. In this study, dust samples collected from 10 houses in south-east Queensland have been analysed by scanning electron microscopy and X-ray microanalysis to measure the inorganic element compositions and to investigate the form of heavy metals in the dusts. The overall analytical results were then used to discriminate between different localities using chemometric techniques. The relative amounts of elements, particularly of Si, Ca, and Fe, varied between size fractions and between different locations for the same size fraction. By analysing individual small particles, many other constituents were identified including Ti, Cr, Mn, Ni, Cu, Zn, Ba, Ag, W, Au, Hg, Pb, Bi, La and Ce. The heavy metals were mostly concentrated in small particles in the smaller size fractions, which allowed detection by particle analysis, though their average concentrations were very low.

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ID Code: 58405
Item Type: Conference Paper
Refereed: Yes
Keywords: House dust, inorganic elements, X-ray microanalysis, particle analysis, heavy metals
ISBN: 9871921897405
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Please consult the authors
Deposited On: 04 Apr 2013 23:04
Last Modified: 12 Jun 2013 15:38

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