Optimizing chromatographic resolution for simultaneous quantification of long chain alkenones, alkenoates and their double bond positional isomers

摘要

Highlights ? Simultaneous analyses of long chain alkenones and alkenoates are achieved. ? Group II/III haptophytes make C36 Δ7,14,21 and Δ14,21,28 ethyl alkenoate isomers. ? All peaks including double bond positional isomers are baseline resolved. ? GC optimization enhances alkenone/alkenoate-based paleoclimatic reconstructions. Abstract We report here our latest attempt to optimize gas chromatographic (GC) separation