Patent ID: 7823439
Filing Date: 2010-11-02
Classification: G01N

Abstract:
1. A method for identifying the composition of a sample, comprising the steps of: introducing said sample onto a first column whereby said sample is separated into at least two segments; introducing said segments into a heartcut device whereby said segments are selectively separated into at least two heartcut fractions, and wherein said heartcut device is operably connected to a midpoint detector; introducing at least one of said fractions onto a second column wherein said midpoint detector determines when said heartcut device introduces said fraction onto said second column and further whereby said at least one fraction is further separated into at least two analytes; introducing at least one said analyte from said second column to a gas chromatography connector; introducing said analyte from said connector onto a third column; introducing said analyte from said third column into a detector; and analyzing said analyte.