| Title: | Development of a short path thermal desorption-gas chromatography/mass spectrometry method for the determination of polycyclic aromatic hydrocarbons in indoor air |
| Address: | "Shanghai Academy of Environmental Sciences, Shanghai, China; State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai, China; College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, China. Electronic address: Liyj@saes.sh.cn. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China. Shanghai Academy of Environmental Sciences, Shanghai, China; State Environmental Protection Key Laboratory of the Cause and Prevention of Urban Air Pollution Complex, Shanghai, China" |
| DOI: | 10.1016/j.chroma.2017.03.050 |
| ISSN/ISBN: | 1873-3778 (Electronic) 0021-9673 (Linking) |
| Abstract: | "Polycyclic aromatic hydrocarbons (PAHs) are present in petroleum based products and are combustion by-products of organic matters. Determination of levels of PAHs in the indoor environment is important for assessing human exposure to these chemicals. A new short path thermal desorption (SPTD) gas chromatography/mass spectrometry (GC/MS) method for determining levels of PAHs in indoor air was developed. Thermal desorption (TD) tubes packed with glass beads, Carbopack C, and Carbopack B in sequence, were used for sample collection. Indoor air was sampled using a small portable pump over 7 days at 100ml/min. Target PAHs were thermally released and introduced into the GC/MS for analysis through the SPTD unit. During tube desorption, PAHs were cold trapped (-20 degrees C) at the front end of the GC column. Thermal desorption efficiencies were 100% for PAHs with 2 and 3 rings, and 99-97% for PAHs with 4-6 rings. Relative standard deviation (RSD) values among replicate samples spiked at three different levels were around 10-20%. The detection limit of this method was at or below 0.1mug/m(3) except for naphthalene (0.61mug/m(3)), fluorene (0.28mug/m(3)) and phenanthrene (0.35mug/m(3)). This method was applied to measure PAHs in indoor air in nine residential homes. The levels of PAHs in indoor air found in these nine homes are similar to indoor air values reported by others" |
| Keywords: | "Adsorption Air Pollution, Indoor/*analysis Fluorenes/analysis *Gas Chromatography-Mass Spectrometry Glass/chemistry Humans Limit of Detection Naphthalenes/analysis Phenanthrenes/analysis Polycyclic Aromatic Hydrocarbons/*analysis/chemistry Gas chromatogra;" |
| Notes: | "MedlineLi, Yingjie Xian, Qiming Li, Li eng Netherlands 2017/04/04 J Chromatogr A. 2017 May 12; 1497:127-134. doi: 10.1016/j.chroma.2017.03.050. Epub 2017 Mar 27" |
