Analysis of Non-polar Organic Compounds in PM 2.5 by Rapid Thermo-desorption Method Coupled with GC/MS

Non-polar organic compounds (NPOCs) associated with PM in the atmosphere were analyzed by automated thermo-desorption (TD) coupled with gas chromatography/mass spectrometry (TD-GC/MS). The analyses for a total of 72 NPOCs were reviewed, including 34 PAHs, one Debenzothiophene, 27 alkanes (C -C ), 5...

Full description

Saved in:
Bibliographic Details
Published inHuanjing kexue Vol. 39; no. 10; p. 4446
Main Authors Ma, Ying-Ge, Wu, Xia, Peng, Meng-Meng, Feng, Jia-Liang, Yu, Jian-Zhen, Qiao, Li-Ping, Zhou, Min, Zhu, Shu-Hui, Li, Li
Format Journal Article
LanguageChinese
Published China 08.10.2018
Subjects
source analysis
non-polar organic compounds
fine particle (PM2.5)
chemical composition
thermo-desorption
Online AccessGet more information

Cover

More Information
Summary:Non-polar organic compounds (NPOCs) associated with PM in the atmosphere were analyzed by automated thermo-desorption (TD) coupled with gas chromatography/mass spectrometry (TD-GC/MS). The analyses for a total of 72 NPOCs were reviewed, including 34 PAHs, one Debenzothiophene, 27 alkanes (C -C ), 5 hopanes and 5 steranes. Through this improved TD method, operation of filter loadings, TD condition and sample introduction were optimized. The MDL were 0.01-1.0, 0.1-8.0 and 0.50-2.0 ng·m for PAHs, alkanes, hopanes and steranes, respectively. Calibration curve linearities were above 0.9 for all compounds. The TD efficiencies were 95%-100% for PAHs, 81%-100% for alkanes and 83.1%-100% for hopanes and steranes. PM samples were pretreated by TD and ultrasonic extraction methods separately and analyzed by GC/MS in two laboratories. Results from these two methods were comparable, as the relative biases were less than 30% for most compounds. Analysis results of PM samples from Linan and Shanghai showed that NPOCs were h
ISSN:0250-3301