The PTR 2e
PTR-TOF-MS

High Sensitivity

The Series 2e Kore PTR-MS features a new and novel PTR reactor with a Kore-designed ion concentrator as part of the reactor, capable of achieving > 200 cps/ppbv Benzene. This greatly reduces the ion losses that would normally occur in the reactor owing to a phenomenon known as ‘space charge’, in which high-density ions repel each other. This novel device channels the ions to the exit of the reactor, resulting in a high current ion beam passing into the next part of the instrument. This reactor and concentrator is also fitted to the Series 1 PTR-TOF-MS.

High Mass Resolution

The Series 2e PTR-MS from Kore features a new spectrometer capable of delivering up to 8,000 mass resolution. For routine operation, the instrument operates at >5,000. The flight path is longer than the series I instrument, resulting in a lower repetition rate (pulse frequency), and this reduces the sensitivity somewhat from the smaller instrument, but with the added advantage of high mass resolution. Nevertheless sensitivity levels are still high even at high mass resolution with Benzene > 200 cps/ppbv.

Rugged and Transportable

The Series 2e PTR-MS instrument is designed for easy and safe transportation and yet with sufficient mass resolution and sensitivity to satisfy the most demanding applications. It is housed in a purpose-designed vertical rack to permit easy transportation in a standard van. The instrument is ‘floated’ inside the frame so that it is ‘cushioned’ during transportation.

All the Kore Technology PTR-MS models can be upgraded to increase the functionality and usability of the Kore Technology PTR-MS instruments. Our optional modules have been developed to provide a complete PTR-MS solution.

Reagent Ion Switching

This optional module allows rapid switching of reagent ion gases under full computer control (water vapour and 2 alternative reagent ion gasses). The switching can be controlled manually or set to switch at pre-set time intervals.

Permeation Calibration Device

The permeation mass calibration device is a heated module to allow addition of a low concentration of a mass calibrant through a permeation device directly into the PTR reactor allowing automatic mass calibration with a calibrant across the mass range 0-350amu.

Heated Inlet Lines

All our PTR-MS instruments can be supplied with internal and external heated inlet lines, capable of 200°C and constructed of passivated inert materials for minimum VOC losses and low VOC adsorption.

PTR Field Measurement Kit

As part of our extensive prototype testing, we designed a field measurement kit to take some of the hassle out of field campaigns. The kit comprises of winch equipment to get a compact PTR-MS into and out of a van and power adapters and equipment for running the instrument using a custom designed portable power supply (the Kore Technology Field Battery Pack).

Inlet Flow Control

For some user applications, it is important to know the flow of sample/analyte gas past the sampling inlet, in order to reduce residence time of sample gas in the inlet system and to produce repeatable sampling conditions. This optional extra allows for computer-controlled inlet flow by mass flow controller, allowing the user to set the flow of inlet gas up to 1 LPM.

Inlet Modules

Kore Technology have developed a series of robust inlet modules including PTFE swab desorbers, trap tube desorbers and SPME desorbers.

Flight Cases

Our standard shipping containers are reusable padded wooden crates, which our customers often use for transporting the instruments to field sites. We also offer reusable flight cases with shock protection and durable sides for customers that ship the instruments regularly to field measurement sites.

PREFICS accessory:

Pre concentrator with Fast Integrated Chromatographic Separation.

The fast thermal swab desorber that is one of three sample inlet systems that we have developed for PREFICS is also available as a separate interface for our PTR-TOF-MS instruments for sensitive detection of semi-volatiles.

Application Areas

• VOC monitoring (ambient air, product quality control and testing)
• Clean room air quality monitoring
• Breath analysis
• Food analysis
• Homeland security
• Odour identification (buildings, factories etc)
• Fence line monitoring

Application Notes

• Real-time Van Measurements
• Stationary Van Measurements
• BTEX in Ambient Air
• Breath Analysis
• Explosives Analysis

Product Note

• PTR 2e

2025

Andersen, S.T., Sander, R., Dewald, P., Wüst, L., Seubert, T., Türk, G.N., Schuladen, J., McGillen, M.R., Xue, C., Mellouki, A. and Kukui, A., 2025. Short-lived organic nitrates in a suburban temperate forest: an indication of efficient assimilation of reactive nitrogen by the biosphere?. Atmospheric Chemistry and Physics, 25(11), pp.5893-5909.

https://acp.copernicus.org/articles/25/5893/2025/acp-25-5893-2025-relations.html

2024

Blau, S. and Jang, M., 2024. Modeling impacts of indoor environmental variables on secondary organic aerosol formation. Science of The Total Environment, 955, p.177036.

https://www.sciencedirect.com/science/article/abs/pii/S0048969724071936

Georgopoulou, M.P., Macias Rodriguez, J.C., Yegen, C.H., Kaltsonoudis, C., Cazaunau, M., Vasilakopoulou, C.N., Matrali, A., Seitanidi, K., Aktypis, A., Nenes, A. and Buissot, C., 2024. A coupled atmospheric simulation chamber system for the production of realistic aerosols and preclinical model exposure. Air Quality, Atmosphere & Health, 17(12), pp.2909-2930.

https://link.springer.com/article/10.1007/s11869-024-01611-5

Vasquez, S., Angeli, M.A.C., Polo, A., Costantini, A., Petrelli, M., Avancini, E., Di Cagno, R., Gobbetti, M., Gaiardo, A., Valt, M. and Lugli, P., 2024. In vitro gastrointestinal gas monitoring with carbon nanotube sensors. Scientific Reports, 14(1), p.825.

https://www.nature.com/articles/s41598-023-50134-z

2023

Lasne, J., Lostier, A., Romanias, M.N., Vassaux, S., Lesueur, D., Gaudion, V., Jamar, M., Derwent, R.G., Dusanter, S. and Salameh, T., 2023. VOC emissions by fresh and old asphalt pavements at service temperatures: impacts on urban air quality. Environmental Science: Atmospheres, 3(11), pp.1601-1619.

https://pubs.rsc.org/en/content/articlehtml/2023/ea/d3ea00034f

2022

Picquet-Varrault, B., Cirtog, M., Duncianu, M., Pangui, E., David, M., Rayez, M.T. and Rayez, J.C., 2022. Kinetic and mechanistic study of the reactions of NO3 radicals with unsaturated aldehydes: 2-butenal, 2-methyl-2-butenal, and 3-methyl-2-butenal. The Journal of Physical Chemistry A, 126(46), pp.8682-8694.

https://pubs.acs.org/doi/abs/10.1021/acs.jpca.2c04216

2021

Grimonprez, S., Wu, J., Faccinetto, A., Gosselin, S., Riber, E., Cuenot, B., Cazaunau, M., Pangui, E., Formenti, P., Doussin, J.F. and Petitprez, D., 2021. Hydrophilic properties of soot particles exposed to OH radicals: A possible new mechanism involved in the contrail formation. Proceedings of the Combustion Institute, 38(4), pp.6441-6450.

https://www.sciencedirect.com/science/article/abs/pii/S1540748920303989

Olivenza-León, D., Mayhew, C.A. and González-Méndez, R., 2021. Proton transfer reaction mass spectrometry investigations of phthalate esters via direct headspace sampling. International Journal of Mass Spectrometry, 461, p.116497.

https://www.sciencedirect.com/science/article/abs/pii/S1387380620304206

2020

Lamkaddam, H., Gratien, A., Pangui, E., David, M., Peinado, F., Polienor, J.M., Jerome, M., Cazaunau, M., Gaimoz, C., Picquet-Varrault, B. and Kourtchev, I., 2020. Role of relative humidity in the secondary organic aerosol formation from high-NO x photooxidation of long-chain alkanes: N-dodecane case study. ACS Earth and Space Chemistry, 4(12), pp.2414-2425.

https://pubs.acs.org/doi/abs/10.1021/acsearthspacechem.0c00265

2019

Ibrahim, W., Wilde, M., Cordell, R., Salman, D., Ruszkiewicz, D., Bryant, L., Richardson, M., Free, R.C., Zhao, B., Yousuf, A. and White, C., 2019. Assessment of breath volatile organic compounds in acute cardiorespiratory breathlessness: a protocol describing a prospective real-world observational study. BMJ open, 9(3), p.e025486.

https://bmjopen.bmj.com/content/9/3/e025486.abstract

Setyan, A., Flament, P., Locoge, N., Deboudt, K., Riffault, V., Alleman, L.Y., Schoemaecker, C., Arndt, J., Augustin, P., Healy, R.M. and Wenger, J.C., 2019. Investigation on the near-field evolution of industrial plumes from metalworking activities. Science of the Total Environment, 668, pp.443-456.

https://www.sciencedirect.com/science/article/abs/pii/S0048969719309088

2018

Bartali, R., Speranza, G., Aguey-Zinsou, K.F., Testi, M., Micheli, V., Canteri, R., Fedrizzi, M., Gottardi, G., Coser, G., Crema, L. and Pucker, G., 2018. Efficient hydrogen generation from water using nanocomposite flakes based on graphene and magnesium. Sustainable Energy & Fuels, 2(11), pp.2516-2525.

https://pubs.rsc.org/en/content/articlehtml/2018/se/c8se00370j

De Haan, D.O., Tapavicza, E., Riva, M., Cui, T., Surratt, J.D., Smith, A.C., Jordan, M.C., Nilakantan, S., Almodovar, M., Stewart, T.N. and de Loera, A., 2018. Nitrogen-containing, light-absorbing oligomers produced in aerosol particles exposed to methylglyoxal, photolysis, and cloud cycling. Environmental Science & Technology, 52(7), pp.4061-4071.

https://pubs.acs.org/doi/abs/10.1021/acs.est.7b06105

Kammer, J., Perraudin, E., Flaud, P.M., Lamaud, E., Bonnefond, J.M. and Villenave, E., 2018. Observation of nighttime new particle formation over the French Landes forest. Science of The Total Environment, 621, pp.1084-1092.

https://www.sciencedirect.com/science/article/abs/pii/S0048969717328280

Lasne, J., Lostier, A., Romanias, M.N., Vassaux, S., Lesueur, D., Gaudion, V., Jamar, M., Derwent, R.G., Dusanter, S. and Salameh, T., 2023. VOC emissions by fresh and old asphalt pavements at service temperatures: impacts on urban air quality. Environmental Science: Atmospheres, 3(11), pp.1601-1619.

https://pubs.rsc.org/en/content/articlehtml/2023/ea/d3ea00034f

Medeiros, D.J., Blitz, M.A., James, L., Speak, T.H. and Seakins, P.W., 2018. Kinetics of the reaction of OH with isoprene over a wide range of temperature and pressure including direct observation of equilibrium with the OH adducts. The Journal of Physical Chemistry A, 122(37), pp.7239-7255.

https://pubs.acs.org/doi/abs/10.1021/acs.jpca.8b04829

2017

Brown, P.A., Cristescu, S.M., Mullock, S.J., Reich, D.F., Lamont-Smith, C.S. and Harren, F.J., 2017. Implementation and characterization of an RF ion funnel ion guide as a proton transfer reaction chamber. International Journal of Mass Spectrometry, 414, pp.31-38.

https://www.sciencedirect.com/science/article/abs/pii/S1387380616301993

Duncianu, M., David, M., Kartigueyane, S., Cirtog, M., Doussin, J.F. and Picquet-Varrault, B., 2017. Measurement of alkyl and multifunctional organic nitrates by proton-transfer-reaction mass spectrometry. Atmospheric Measurement Techniques, 10(4), pp.1445-1463.

https://amt.copernicus.org/articles/10/1445/2017/

Lourenço, C., González-Méndez, R., Reich, F., Mason, N. and Turner, C., 2017. A potential method for comparing instrumental analysis of volatile organic compounds using standards calibrated for the gas phase. International Journal of Mass Spectrometry, 419, pp.1-10.

https://www.sciencedirect.com/science/article/abs/pii/S1387380617300945

Reed Harris, A.E., Pajunoja, A., Cazaunau, M., Gratien, A., Pangui, E., Monod, A., Griffith, E.C., Virtanen, A., Doussin, J.F. and Vaida, V., 2017. Multiphase photochemistry of pyruvic acid under atmospheric conditions. The Journal of Physical Chemistry A, 121(18), pp.3327-3339.

https://pubs.acs.org/doi/abs/10.1021/acs.jpca.7b01107

Riva, M., Healy, R.M., Flaud, P.M., Perraudin, E., Wenger, J.C. and Villenave, E., 2017. Gas-and particle-phase products from the photooxidation of acenaphthene and acenaphthylene by OH radicals. Atmospheric Environment, 151, pp.34-44.

https://www.sciencedirect.com/science/article/abs/pii/S1352231016309530

Zannoni, N., Gros, V., Sarda Esteve, R., Kalogridis, C., Michoud, V., Dusanter, S., Sauvage, S., Locoge, N., Colomb, A. and Bonsang, B., 2017. Summertime OH reactivity from a receptor coastal site in the Mediterranean Basin. Atmospheric Chemistry and Physics, 17(20), pp.12645-12658.

https://acp.copernicus.org/articles/17/12645/2017/

2016

Lamkaddam, H., Gratien, A., Pangui, E., Cazaunau, M., Picquet-Varrault, B. and Doussin, J.F., 2017. High-NO x photooxidation of n-dodecane: Temperature dependence of SOA formation. Environmental Science & Technology, 51(1), pp.192-201.

https://pubs.acs.org/doi/abs/10.1021/acs.est.6b03821

Riva, M., Healy, R.M., Tomaz, S., Flaud, P.M., Perraudin, E., Wenger, J.C. and Villenave, E., 2016. Gas and particulate phase products from the ozonolysis of acenaphthylene. Atmospheric Environment, 142, pp.104-113.

https://www.sciencedirect.com/science/article/abs/pii/S1352231016305313

Rizk, M., Verriele, M., Dusanter, S., Schoemaecker, C. and Locoge, N., 2016. Fast sorption measurements of volatile organic compounds on building materials: Part 1–Methodology developed for field applications. Building and Environment, 99, pp.200-209.

https://www.sciencedirect.com/science/article/abs/pii/S0360132315302158

Sonderfeld, H., White, I.R., Goodall, I.C., Hopkins, J.R., Lewis, A.C., Koppmann, R. and Monks, P.S., 2016. What effect does VOC sampling time have on derived OH reactivity?. Atmospheric Chemistry and Physics, 16(10), pp.6303-6318.

https://acp.copernicus.org/articles/16/6303/2016/

2015

Duporte, G., Flaud, P.M., Geneste, E., Augagneur, S., Pangui, E., Lamkaddam, H., Gratien, A., Doussin, J.F., Budzinski, H., Villenave, E. and Perraudin, E., 2016. Experimental Study of the Formation of Organosulfates from α-Pinene Oxidation. Part I: Product Identification, Formation Mechanisms and Effect of Relative Humidity. The Journal of Physical Chemistry A, 120(40), pp.7909-7923.

https://pubs.acs.org/doi/abs/10.1021/acs.jpca.6b08504

Riva, M., Healy, R.M., Flaud, P.M., Perraudin, E., Wenger, J.C. and Villenave, E., 2015. Gas-and particle-phase products from the chlorine-initiated oxidation of polycyclic aromatic hydrocarbons. The Journal of Physical Chemistry A, 119(45), pp.11170-11181.

https://pubs.acs.org/doi/abs/10.1021/acs.jpca.5b04610

Wyche, K.P., Monks, P.S., Smallbone, K.L., Hamilton, J.F., Alfarra, M.R., Rickard, A.R., McFiggans, G.B., Jenkin, M.E., Bloss, W.J., Ryan, A.C. and Hewitt, C.N., 2015. Mapping gas-phase organic reactivity and concomitant secondary organic aerosol formation: chemometric dimension reduction techniques for the deconvolution of complex atmospheric data sets. Atmospheric Chemistry and Physics, 15(14), pp.8077-8100.

https://acp.copernicus.org/articles/15/8077/2015/