Potts, P.; Ramsey, M. H. and Carlisle, J.
|DOI (Digital Object Identifier) Link:||http://dx.doi.org/10.1039/b207259a|
|Google Scholar:||Look up in Google Scholar|
An investigation using in situ analysis by portable X-ray fluorescence (PXRF) has shown that contamination present on industrial buildings at a heritage arsenic works site near Redruth, Cornwall, UK results from the absorption of arsenic by porous and semi-porous building materials that were in contact with arsenic-rich flue gases. Results from a preliminary survey indicate that arsenic remains locked in these materials and is being gradually leached out by weathering processes. This weathering causes general contamination of the adjacent building surfaces averaging 1845 mug g(-1) arsenic, presumably caused, by evaporation of leach solutions in contact with air at the surface of the building materials. More extensive crystalline deposits were found under arches protected from dissolution and further dispersion by rain water. These deposits appeared to comprise calcium sulfate (gypsum), associated with on average between 1.2 and 6.8% m/m As: In situ PXRF proved to be highly effective in locating sources of contamination at the site and in providing data that allowed a hypotheses for the origin of this contamination to be formulated and tested in the field.
|Item Type:||Journal Article|
|Keywords:||Iodide detector; silicate rocks; instrumentation; spectrometry; samples; soil; xrf|
|Academic Unit/Department:||Science > Environment, Earth and Ecosystems
|Interdisciplinary Research Centre:||Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)|
|Depositing User:||Astrid Peterkin|
|Date Deposited:||09 Aug 2007|
|Last Modified:||14 Jan 2016 16:41|
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