A simple dilute-and-shoot method for screening and simultaneous quantification of nicotine and alkaloid impurities in electronic cigarette refills (e-liquids) by UHPLC-DAD, Barhdadi, Sophia, Desmedt Bart, Courselle Patricia, Rogiers Vera, Vanhaecke Tamara, and Deconinck Eric , Journal of Pharmaceutical and Biomedical Analysis, 30 May 2019, Volume 169, Issue 169, Number 234, (2019)