Advanced and innovative chromatographic techniques for the study of citrus essential oils

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A brief description is given of advanced chromatographic techniques currently employed in citrus essential oil analysis (the interactive use of linear retention indices and MS spectra probability matching in GC–MS; on‐line ‘heart cutting’ multidimensional chromatographic techniques, comprehensive GC and LC; fast GC and GC–MS; fast HPLC; HPLC–MS). A series of applications are reported, demonstrating both the valid and the potential of these methods.