Resonance (1H-NMR) – and interpreted by multiset analysis by In the present study the photodegradation process was monitored simultaneously with two spectroscopic techniques – ultraviolet–visible diode array (UV–vis-DAD) and 1H-nuclear magnetic Recorded during the photodegradation of Acid Orange 61, Acid Redĩ7 and Acid Brown 425 to perform a kinetic study in order toĮstablish the optimal conditions in which this process should be Least squares (MCR-ALS) analysis of the UV–vis-DAD data that was Our research group used multivariate curve resolution-alternating Kinetic aspects and the type of intermediate formed. Information, it is fast and it is very suitable for identifying unstableĪliquots collected at different reaction times were analyzed The sample to be treated, it gives qualitative and quantitative It is a nondestructive technique, it does not require Significant advantages over the techniques that are habitually Which was obtained from UV–vis-DAD because it has some H-NMR spectroscopy was selected to complement the data Mentioned as for information on the presence of intermediate The developed strategy constitutes a relatively fast methodology, useful both to monitor the degradation of the three dyes In each order (concentration and spectra) for each component that Obtained during the degradation process, it is recovered a profile When MCR-ALS is applied to data matrices formed by the spectra Multivariate curve resolution-alternating least squares (MCR-ALS). Simultaneously by the two spectroscopic techniques and theĬ.
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