High-speed peak matching algorithm for retention time alignment of gas chromatographic data for chemometric analysis

Application of Chemometrics to the Interpretation of Analytical Separations Data

“…This is because some alignment methods can distort peaks, affecting their quantification. Some of the more common algorithms include correlation optimized warping (COW) (Nielsen et al, 1998;Tomasi et al, 2004), correlation optimized shifting (coshift) (Van den Berg, 2005), and a piecewise peak-matching algorithm (Johnson et al, 2003).…”

Quality control of herbal medicines

“…However, correction of retention time shift of the fingerprint of herbal medicines should be taken into consideration first, since some types of variation sources are inevitably encountered from one chromatogram to another [7][8][9][10][11][12][13][166][167][168][169][170][171][172][173][174][175][176][177][178][179][180][181][182]. Under this situation, some unacceptable results, one of which is imposed by the retention time shifts, will be produced.…”

“…During the past decades, several kinds of useful approaches have been developed for peak synchronization in chromatographic profiles [176][177][178][179][180][181][182]. Some of them corrected the retention time shifts by making internal standards added or marker peaks coincide in all chromatograms under study [177][178][179].…”

“…Some of them corrected the retention time shifts by making internal standards added or marker peaks coincide in all chromatograms under study [177][178][179]. Among them, the technique in ref.…”

“…Among them, the technique in ref. [179] was recently developed. At its first step, chromatographic peaks were identified by setting a retention time window in both of the sample and target chromatograms, and then a list of their retention times was generated.…”