%0 Journal Article %K Free-Base Nicotine %K Vaping Aerosol Particles %K X-ray Spectroscopies %A Chaya Weeraratna %A Xiaochen Tang %A Oleg Kostko %A Vi H Rapp %A Lara A Gundel %A Hugo Destaillats %A Musahid Ahmed %B The Journal of Physical Chemistry Letters %D 2023 %G eng %N 5 %R https://doi.org/10.1021/acs.jpclett.2c03748 %T Fraction of Free-Base Nicotine in Simulated Vaping Aerosol Particles Determined by X-ray Spectroscopies %U https://pubs.acs.org/doi/10.1021/acs.jpclett.2c03748 %V 14 %8 01/2023