Mass specttrometric quantification of chemical mixture components

The method of claim 13, wherein said chemical sample components comprise components selected from the group consisting of metabolites, peptides and proteins.

A program storage device accessible by a processor, tangibly embodying a program of instructions executable by said processor to perform method steps for a spectral data processing method, said method steps comprising:

• a) obtaining a set of spectra from a plurality of chemical samples, each spectrum comprising peaks having peak intensities;
• and
• b) in each spectrum, scaling said peak intensities by a normalization factor computed in dependence on chemical sample components whose concentrations are substantially constant in said chemical samples.

The program storage device of claim 43, wherein said normalization factor is a non-parametric measure of said peak intensities.

The program storage device of claim 45, wherein said chemical sample components comprise components selected from the group consisting of metabolites, peptides and proteins.

A computer readable medium storing a plurality of normalized peak intensities computed by:

• obtaining a set of spectra from a plurality of chemical samples, each spectrum comprising peaks having peak intensities;
• and
• in each spectrum, scaling said peak intensities by a normalization factor computed in dependence on chemical sample components whose concentrations are substantially constant in said chemical samples.