ANALYTICAL METHOD AND ANALYZER FOR THE DETERMINATION OF ANALYTES

摘要

An analytical method for the simultaneous determination of two or more analytes (preferably sulfur-containing compounds) in a short time. An analytical method for the determination of two or more analytes which comprises the step (1) of making both a sample and a moving phase flow through a passageway (P1), the step (2) of making sample-free moving phases flow through a passageway (P2) and a passageway (P3), and the step (3) of obtaining chromatograms of two or more analytes (preferably sulfur-containing compounds) eluted from an analyzer column in the steps (1) and (2) with a detector (with the proviso that the passageway (P1) is a path of flowing through a pretreatment column in the forward direction and then through an analyzer column to a detector; the passageway (P2) is a path of flowing through an analyzer column to a detector without flowing through a pretreatment column; and the passageway (P3) is a path of flowing through a pretreatment column in the opposite direction and discharging without flowing through an analyzer column or a detector), wherein the step (1) is finished after the two or more analytes have passed through the pretreatment column, and then the step (2) is initiated.