Stationary monitoring and source apportionment of VOCs in a chemical industrial park by combining rapid direct-inlet MSs with a GC-FID/MS

Research progresses on VOCs emission investigationsviasurface and satellite observations in China

“…However, the GC-MS/FID system is not good at determining OVOCs and NVOCs (nitrogen volatile organic compounds). 35 In recent years, emerging technologies including proton transfer reaction mass spectrometry (PTR-MS) and singlephoton ionization time-of-ight mass spectrometry (SPIMS) for atmospheric VOCs observations in China have been commonly used in some studies. SPIMS has the advantages of high temporal and spatial resolution, fast detection speed, high sensitivity, and good system stability, 36 e.g., SPIMS was used in industrial park observation campaign by Huang et al 35 PTR-MS and SPIMS have a time resolution in the tens of seconds and can measure various VOCs, especially OVOCs and NVOCs.…”

“…35 In recent years, emerging technologies including proton transfer reaction mass spectrometry (PTR-MS) and singlephoton ionization time-of-ight mass spectrometry (SPIMS) for atmospheric VOCs observations in China have been commonly used in some studies. SPIMS has the advantages of high temporal and spatial resolution, fast detection speed, high sensitivity, and good system stability, 36 e.g., SPIMS was used in industrial park observation campaign by Huang et al 35 PTR-MS and SPIMS have a time resolution in the tens of seconds and can measure various VOCs, especially OVOCs and NVOCs. However, the limitation of PTR-MS and SPIMS is that the mass-to-charge ratio (m/z) of interfering ions of non-target group VOCs could be the same as that of target group VOCs.…”

“…However, the GC-MS/FID system is not good at determining OVOCs and NVOCs (nitrogen volatile organic compounds). 35…”

Fast detection of hazardous chlorinated volatile organic compounds via laser-induced breakdown spectroscopy

“…It is worth noting that the sample pretreatment is carried out only once before spectra collection, and the analytical efficiency can be improved with the increase of laser frequency. Compared to the traditional online technologies (GC-MS, GC-FID), whose measurement time is about 1 h, [28][29][30][31] the established model has signicantly higher efficiency and lower cost. Thus, the proposed method based on the LIBS molecular spectra, with the incomparable advantages of simplicity, low cost, wide application, stability, and being fast, shows great potential for the realtime and in situ analysis of Cl-VOCs in the air environment.…”

Evaluation of a New DC-Ion Funnel Drift Tube for Use in Proton Transfer Reaction Mass Spectrometry

“…The reagent ions, usually H 3 O + , are generated in a discharge ion source, pass through a sampling aperture into the drift tube, and ionize the analyte by the PTR in the drift tube. The reagent ions and product ions are then detected using a mass analyzer, for example, quadrupole mass spectrometer (QMS), − ion-trap analyzer, , or time-of-flight mass spectrometer. − …”