The cover illustration consists of adapted figures from each of the special issue articles and was created by our art director, Sean Kennedy. Attila Felinger of the University of Veszprém (Hungary) and Maria Chiara Pietrogrande at the University of Ferrara (Italy) begin the coverage by describing different approaches for decoding complex chromatograms, including a clever new technique using Fourier analysis and a simple graphical method. Then, Torgny Fornstedt at the University of Uppsala (Sweden) and our old friend and former Analytical Chemistry Associate Editor Georges Guiochon with the University of Tennessee and Oak Ridge National Laboratory show that there is something to learn from nonlinear effects. In fact, investigating these effects can be a useful way to accurately study retention mechanisms. Finally, take the radical step of abandoning silica stationary phases in favor of zirconia for some extreme separations with Christopher Dunlap at Saint Mary’s College, Clayton McNeff and Dwight Stoll at ZirChrom Separations, and Peter Carr at the University of Minnesota, who demonstrate how zirconia-based columns reproducibly handle separations at high temperatures and extreme pHs.

The “Pushing Chromatography Further” special issue articles can be read by clicking onto the A-page section. All of the A-pages are free for the next two months.

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