Articles | Volume 14, issue 10
Atmos. Meas. Tech., 14, 6835–6850, 2021
https://doi.org/10.5194/amt-14-6835-2021
Atmos. Meas. Tech., 14, 6835–6850, 2021
https://doi.org/10.5194/amt-14-6835-2021
Research article
25 Oct 2021
Research article | 25 Oct 2021

Quantification of isomer-resolved iodide chemical ionization mass spectrometry sensitivity and uncertainty using a voltage-scanning approach

Chenyang Bi et al.

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Short summary
Iodide-adduct chemical ionization mass spectrometry (I-CIMS) has been widely used to analyze airborne organics. In this study, I-CIMS sensitivities of isomers within a formula are found to generally vary by 1 and up to 2 orders of magnitude. Comparisons between measured and predicted moles, obtained using a voltage-scanning calibration approach, show that predictions for individual compounds or formulas might carry high uncertainty, yet the summed moles of analytes agree reasonably well.