A survey of the effect of temperature, transmission module material and analysis time on ion intensities in transmission mode direct analysis in real time mass spectrometry is presented. Ion intensity profiles obtained for two related compounds are similar when analysed separately but are very different when analysed as a mixture.
Harding, L. P., Parkes, G. M. B., & Townend, J. (2014). Parameters affecting ion intensities in transmission-mode direct analysis in real-time mass spectrometry. The Analyst, 139(17), 4176-4180. https://doi.org/10.1039/C4AN00859F