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    STUDIA CHEMIA - Issue no. 2 / 2014  
         
  Article:   INDOOR AIR BTEX MEASUREMENTS.

Authors:  MONICA CULEA, PAULA PODEA. 		 
       
         
  Abstract:   An improved quantitative method was used for measuring benzene, toluene, ethyl benzene, m/p-xylene and o-xylene (BTEX)] by preconcentration on active charcoal followed by gas chromatography-mass spectrometry (GC/MS) analysis. The selected ion monitoring (SIM) mode was used for the quantitative GC/MS analysis. The internal standard used was stable isotopically labeled benzene. The compounds of interest were eluted in 7.5 min. The method is simple, rapid and shows good validation parameters (linearity, precision and accuracy) for the studied compounds. The method was tested for the investigation of the indoor emissions from different materials and furniture. The results showed that attention should be paid to the new furniture and to the inflating indoor of the new vacuum packed mattresses. 

Keywords: GC/MS, BTEX, isotopic dilution, SIM
 
         
     
         
         
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