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. 2012 Nov 22;12(12):16060–16076. doi: 10.3390/s121216060

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© 2012 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 5. — (A) Masses associated with the LF emitted 0–10 min after cutting at E/N value 137 Td. (B) Ratios m/z 45/91 and 73/91 2 min after cutting in experiments at different E/N values. (C) Masses associated with propanal emitted 0–10 min after cutting at E/N value 137 Td. (D) Ratios m/z 31/59 and 41/59 5 min after cutting in experiments at different E/N values.