Chemometric
strategy, scaling, calculation

1. the first by looking for a classification of the four considered catalytic systems on using all the available information, particularly all the response values of the catalyst at the different concentrations
2. on the second only a target molecule was adopted of mean recalcitrancy in order to compare our four systems with suspended TiO2

• data coming from differences among real and average values are reported with the some number of significative digits
• instead of classical autoscaling we performed a column standardization by average value subtraction and std. dev. division to obtain larger data dispersion.

According to one of the first slide we used Parvus chemometrics package (free from Prof. Forina, Genova University) to perform calculation. After we use MVSP from W. Kowak, U.K. to recalculation and graphic presentation.