A number of samples from a peat deposit in Wicken Fen, Cambridgeshire, England were analyzed using Gas Chromatogram/Mass Spectrometry (GC/MS) in order to extract parameters that might be used to interpret the peat chemistry in terms of past climate change. The choice of parameters was based on factor analysis of n-alkane, n-alkanal, known and unknown compound, quantified for 20 samples, separated into extract and residues, as well as the total samples. These analyses established that lipid biomarkers identified n-alkane (C_19 toC_31) chain, n-alkanal (C_22 toC_29) chain, known and some...