A SPME-GC-MS method for the evaluation of dropping capacity of organic pollutants by TiO2 added plasters used in building industry

Author(s): G. Pieraccini, F.R. Dani, L. Turbanti, F. Boscaro, C. Pepe, G. Moneti
Paper category : conference
Book title: International RILEM Symposium on Photocatalysis, Environment and Construction Materials - TDP 2007
Editor(s): P. Baglioni and L. Casssar
Print-ISBN: 978-2-35158-056-1
e-ISBN: 978-2-35158-057-8
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 93 - 99
Total Pages: 7
Language: English

Abstract: We propose a method based on Solid Phase MicroExtraction (SPME) and GC-MS analyses aimed at evaluating the dropping capacity of environmental organic pollutants by TiO2-plasters used in building industry.
One ml of liquid mortar (equivalent to 1.4 g of dry material) was inserted into a 16 cm3 glass vial and evenly distributed on half of the vial surface, so to irradiate the vial content with an artificial UV light source through the left transparent surface.
After plaster was dried, benzene, toluene, ortho-xylene, pyridine and naphthalene were inserted into the vial in different concentrations (ranging from 31 to 155 μg/L) and vials were sealed soon after. The analyte concentrations were measured during the following 4 days through SPME and GC-MS and compared to those found in control vials applied with TiO2 plaster but not irradiated, or applied with plaster without TiO2. In the experimental vials, the concentration of all the analytes dropped remarkably, reaching a 100% drop for naphthalene and pyridine.

Online publication: 2011-07-01
Publication type : full_text
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