Brice M.R. Appenzeller

TL;DR: It was found that steric hindrance and molecular mass play a very important role in the choice of the best suited derivatization reagent: compounds with sterically hindered sites derivatized with MTBSTFA produce very small analytical responses or no signal at all, and compounds with high molecular mass produce no characteristic fragmentation pattern when derivatizing is performed with BSTFA.

TL;DR: A critical assessment of some specific aspects presented in the literature as well as future needs to strengthen the position of hair as a relevant biomarker of exposure to be used in epidemiological studies are presented.

TL;DR: The pattern of EtG concentration detected in the different hair segments matched with the drinking history of patients, displaying variations (increase and decrease) in alcohol consumption and also time of cessation.

TL;DR: Although an accurate characterization of electronic cigarette emissions requires further analytical optimizations, the results have shown that vaping exposes the user to lesser amounts of selected toxic components of concern found in some representative French e-cigarette products than does smoking typical conventional cigarettes.

TL;DR: Hair analysis is supported as a reliable tool to be used during epidemiological studies to investigate exposure-associated adverse health effects and its superiority over using fluids for differentiating animals from different groups and for re-attributing animals to their correct groups of exposure based on pesticide concentrations in the matrix.