Separating chromatograph overlapped peaks in blind signal separation
Yao Zhi · Jisuanji yu yingyong huaxue · 2005
Chemical overlapped signal may be separated in Blind Signal Separation (BSS). In this paper, independent component a-nalysis (ICA) , one of BSS methods, was used for separating independence chromatograph peaks from overlapped peak, those separated peaks conform to the quota relations, and keep immobile retention time. BSS proposition was explained in chromatograph analysis; it is proposed that independent components in ICA correspond to separated unit chromatograph peaks, elements in ICA hybrid matrix correspond to unit ratios of each matter components. Overlapped chromatograph peaks including two simulation components were constructed to be computing confirmation; Hexane/Heptane system was determined to be an experiment confirmation. Confirmed by the simulation and experiment, after many measures which times is more than or equal to the component number and component quotas are different, the chromatograph overlapped peaks are separated to each unit peaks of components by BSS, each component comparative contents in overlapped peak are certain and relative error is less than 5 % .