Column Switching Technique for Group-Type Separation of Different Pah Classes by use of C18-Modified Silica and Polystyrene Packings

Abstract
A column switching technique was developed to realize a group-type separation of PAHs and nitrogen containing PAHs (N-PAHs) applying a C18-immobilized polystyrene packing as well as a C18-modified silica stationary phase. On the first column the group-type separation and also the separation of the N-PAH fraction in single compounds was performed. After backflush and transfer to a second column, the separation of the PAH fraction could be achieved.
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