“…High pressure liquid chromatography (hplc) is a particularly promising technique for the separation of high molecular weight PAH (16,(38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55). The advantages of hplc have been greatly enhanced by the recent development of bonded octadecylsilyl columns of micro particle size (56)(57)(58). For example, near baseline separation of the carcinogenic BaP and its noncarcinogenic isomer BeP is easily accomplished, as shown in Figure 1.…”