Investigation of Hopanoid Biomarkers in Lake Sediments by GC-MS and RP-HPLC-APCI-MS

Hopanoids are kit ethos boro across vape x dovpo mainly derived from bacteriohopanpolyols that occur especially in bacteria, show the importance of bacterial lipid contributions in geological materials.In this work, GC-MS and RP-HPLC-APCI-MS analyses of hopanoid biomarkers in oxic and anoxic sediment samples from Lake Cadagno (Swiss Alps) and Lake Voua de la Motte (Haute Savoie, g25-660 focus st France) are presented and discussed.Samples were ultrasonically extracted, fractionated by flush chromatography on silica gel and derivatised before the analyses.Periodic acid/ sodium borohydride cleavage was used to identify highly functionalised hopanoids.