Evaluation of the air quality

Identifier:  TFG:1375

Handle: https://hdl.handle.net/20.500.11797/TFG1375

Authors:  Sanmartin Seyós, Joel

Abstract:
This study describes the optimization and validation of an analytical method for determining the most common degradation products of 1,3-butadiene, included, in air samples by active sampling on sorbent tubes, followed by thermal desorption and gas chromatography-mass spectrometry. Carbopack X was the solid sorbent selected to develop this method, in addition, tests in atmospheres around 60 % relative humidity, were performed to study the hydrophobicity of the selected solid sorbent. The method detection limits were between 0,002 and 0,004 μg/m3 for a sample volume of 12 L (constant flow rate of 50 mL/min). The repeatability results (n=5, 2,5ng) expressed as relative standard deviation percentage, were lower than 4% for acetaldehyde, 1,3-butadiene and propanal, the remaining compounds had values lowest than 10 %. Urban air samples from El Morell and Puigdelfí collected under favourable weather conditions were analyzed. Concentrations of acetaldehyde, 1,3-butadiene and furan ranging between 0,04 and 2,66 μg/m3 were found.