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. 2020 Jun 30;26(4):241–273. doi: 10.1177/1469066720939399

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© The Author(s) 2020

This article is distributed under the terms of the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 5. — Comparison of (a) 70 eV, (b) 15 eV, and (c) FI mass spectra of n-undecane, C₁₁H₂₄, M_w = 156 u. For all three, the alkane was supplied via the reservoir inlet of a JEOL JMS-700 magnetic sector instrument. The FI mass spectrum was obtained using a 5 µm FI emitter at 10 mA emitter heating current.