01469nab a2200229 4500 20260520002032.0 260224s2011 xxu Fast assessment of diene values in pyrolysis gasoline by UV-visible spectroscopy and multivariate calibration agos. 2011 04/04/2012 ; 04/04/2012 5 p. ; 283 - 287 Transcripción del resumen del autor. Conjugated dienes in pyrolysis gasoline samples were assayed by spectrophotometry. The calibrations were carried out by partial least squares regression using spectrophotometric data and the reference method UOP-326. The maximum deviation observed for an independent set of samples was 12% compared with the reference method. Spectral data preprocessing and weighting were investigated for the modeling. Values of root mean square error of calibration and prediction, and normalized root mean squared error were used as criteria to define the best calibration condition. 26 non-hydrogenated and 21 hydrogenated pyrolysis gasoline samples were used to model the spectral data by PLS regression. 2 Journal of Petroleum Science & Engineering 78 ARTICULO Hilgemann, Mauricio 52325 Nascimento, Paulo C. 52326 Dias, Daiane 52327 Guterres, Marcos V. 52328 Stringhini, Fabiane M. 52329 186982 186982 0 0 0 0 254801 BAAB BAAB 2026-03-06 200059087 0 200059087 2026-03-06 00:15:40 2026-03-06 ARTICULO