Proton transfer reaction-mass spectrometer

A proton transfer reaction-mass spectrometer (PTR-MS) system has been developed which allows on-line measurement of VOCs with concentrations as low as a few pptv (parts per trillion by volume) (Hansel et al., 1998). The acute measurement sensitivity to VOCs and real-time characteristics make it a very powerful tool in both indoor and outdoor environmental research. 

Hansel, A., Jordan, A., Warneke, C. et al. (1998) Improved detection limit of the proton transfer reaction mass spectrometer on-line monitoring of volatile organic compounds at mixing ratios of a few PPTV. Rapid Communications in Mass Spectrometry, 12 (13), 871-5. 

Performance characteristics and applications of a proton transfer reaction-mass spectrometer for measuring volatile organic compounds in ambient air. Environmental Science and Technology, 36 (7), 1554—60. 

PTRMS proton transfer reaction mass spectrometer... 

Proton Transfer Reaction Mass Spectrometer Rapid Measurement of selected VOC s... 

Up to now, there are few applications on detecting VOCs dissolved in Uquid samples with PTR-MS. The PTR-MS is designed only for trace gas detection and is not suitable for direct Uquid sample introduction. Two methods have been obtained for the PTR-MS measurements of VOCs in Uquid (1) by a membrane inlet proton transfer reaction mass spectrometer (MI-PTR-MS) [190-192] or (2) by measuring the solution headspace and then calculating the concentration in the liquid using Henry s law constant (HLC) [145,193-195]. 

Jordan,A., Haidacher, S., Hanel, G., Hartungen, E., Herbig, I, Mark, L., Schottkowsky, R., Seehauser, H., Sulzer, E, Mark, T.D. (2009) An online ultra-high sensitivity proton-transfer-reaction mass-spectrometer combined with swit-chable reagent ion capability ( R+SRl-MS.).International Journal of Mass Spectrometry, 286,32-38. 

Keck, L., Oeh, U., Hoeschen, C. (2007) Corrected equation for the concentrations in the drift tube of a proton transfer reaction-mass spectrometer (PTR-MS). International Journal of Mass Spectrometry, 264, 92-95. 

Knighton,W.B.,Fortner, E.C.,Herndon, S.C.,Wood, E.C., Miake-Lye, R.C. (2009) Adaptation of a proton transfer reaction mass spectrometer instrument to employ NO-h as reagent ion for the detection of 1,3-butadiene in the ambient atmosphere. Rapid Communications in Mass Spectrometry, 23,3301-3308. 

Thompson, X, Worthington, T. (2004) The proton transfer reaction mass spectrometer and its use in the medical sciences applications to drug assays and the monitoring of bacteria. International Journal of Mass Spectrometry, 239, 235-241. 

Jordan A, Haidacher S, Hanel G, Hartungen E, Herbig J, Maerk L, Sehottkowsky R, See-hauser H, Sulzer P, Maerk TD. An online ultra-high sensitivity proton-transfer-reaction mass-spectrometer combined with switchable reagent ion eapabilily (PTR + SRI-MS). Int J Mass Speetrom. 2009 286 32-8. 

Mikoviny, T, Kaser, L., Wisthaler, A. (2010) Development and characterization of a high-temperature proton-transfer-reaction mass spectrometer (HT-PTR-MS). Atmos. 

Steinbacher, M., Dommen, J., Ammann, C. et al. (2004) Performance characteristics of a proton-transfer-reaction mass spectrometer (PTR-MS) derived from laboratory and field measurements. Int. J. Mass Spectrom. 239,117. 

O Hara, M., Mayhew, C. A. (2009) A preliminary comparison of volatile organic compounds in the headspace of cultures of Staphylococcus aureus grown in nutrient, dextrose and brain heart bovine broths measured using a proton transfer reaction mass spectrometer. J. Breath Res. 3, 027001. 

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