Scientific objectives

In the framework of EUROCHAMP 2020, a PTR-MS measurement intercomparison campaign has been carried out at the HELIOS atmospheric simulation chamber in the period from May 6 to May 24, 2019.

14 different European Institutes have participated to the Campaign:

The performance of the different PTR-MS instruments has been assessed under various conditions (e.g., anthropogenic vs. biogenic reagent gases, humid vs. dry air matrix) under both blind and non-blind conditions. The main scientific goal of the comparison exercise is to ensure comparability of results generated by different PTR-MS instruments and different instrument operators (IONICON and KORE). During the campaign, IONICON/UiO team has tested a new high-resolution PTR-ToF-MS instrument that is soon to be launched on the market. The University of Utrecht team further explored the use of a newly developed PTR-MS calibration device (doi: 10.5194/amt-2018-446).

Innovative aspects

The PTR-MS intercomparison campaign at the HELIOS simulation has involved an unprecedented number of groups and types of different PTR-MS instruments. The UiO/IONICON team deployed a new high-resolution PTR-ToF-MS instrument that is not yet on the market. The University of Utrecht team deployed an innovative calibration device.

Dissemination plan

The results from the instrument intercomparison will be published in Atmospheric Chemistry and Physics (ACP, open access). UiO/IONICON will publish a separate Technical Note on the performance of the new high-resolution PTR-ToF-MS instrument.

Potential impact of the project

The intercomparison exercise is expected to increase the analytical reliability of PTR-MS results obtained from atmosphere simulation chamber experiments.

Platform Layout


Instruments display

The experiments Agenda: The Experiments took place from May 6 to May 24, 2019.

Data analysis, results and dissemination

The data obtained by the participants will be submitted to the independent reviewer by the end of July 2019, a meeting with all participants is planned for early 2020. Publication of the data and conclusions is expected during the course of 2020.


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