Instruments

PTR Data Toolkit

When using a Vocus instrument for long-term ambient measurements, the data workup includes several steps to characterize the proper functioning of the instrument, account for instrument drift and incorporate calibrations made in the field as well as before and after the field deployment in the labratory. The PTR Data Toolkit was developed in the IGOR programming environment by Dr. Andrew Jensen to streamline this process for large data sets and allow the calibration for a large range of species, including those contained in standards as well as calculated from first principles. A paper describing this tool is currently in preparation.

The PTR Data Toolkit can be downloaded at this link.

Associated documentation can be downloaded from this link.

Version history:

• March 2023: version 1.0 posted

• July 2023: version 1.1, fixed an issue where the toolkit would only compile in Igor 9.

Publications

• Jensen, A., Koss, A. R., Hales, R., and de Gouw, J. A.: Measurements of VOCs in ambient air by Vocus PTR-TOF-MS: calibrations, instrument background corrections, and introducing a PTR Data Toolkit, Atmos. Meas. Tech., 16, 5261–5285, doi:10.5194/amt-16-5261-2023, 2023.