https://www.selleckchem.com/pr....oducts/ph-797804.htm
As an innovative analytical approach ordinal analysis is applied to positive matrix factorization (PMF) analysis outputs to identify the most important species and factors in chemical ionization mass spectrometry (CIMS) data. The procedure and outcome of the ordinal analysis facilitate further automated data analysis. Prior to standard PMF analysis, CIMS data were normalized to assure equal comparisons and facilitate the analysis process. The ordinal analysis was applied to the Factor Profiles (FPs) results, where mass numbers m/z are