TY  - CONF
AU  - De La Guardia, M.
AU  - Khalaf, K.D.
AU  - Kasan, B.A.
AU  - Morales-Rubio, A.
AU  - Arias, J.J.
AU  - Garcia-Fraga, J.M.
AU  - Jimenez, A.I.
AU  - Jimenez, F.
T1  - Simultaneous kinetic spectrophotometric determination of five phenolic compounds by reaction with p-aminophenol, using partial least squares data treatment
LA  - eng
PY  - 1996
SP  - 1321
EP  - 1326
T2  - Analyst
SN  - 0003-2654
VL  - 121
IS  - 9
PB  - Royal Society of Chemistry
AB  - A fast and accurate procedure has been developed for the simultaneous determination of resorcinol, m-aminophenol, o-cresol, phenol and m-cresol in waters. The method is based on the reaction between the aforementioned phenolic compounds, at concentration levels of ppm, and 300 ppm of p-aminophenol in 0.05 mol l-1 NaOH and in the presence of 0.004 mol l-1 KIO4. The treatment of absorbance data, between 400 and 700 nm, obtained at interval times of 20 s between 40 and 120 s and 40 s between 120 and 600 s, by means of the use of Partial Least Squares 2 (PLS-2), using the UNSCRAMBLER program, suggested that the use of 7 factors can explain more than 99.5% of the residual variance. The method has been applied to the analysis of synthetic samples, not employed for calibration, and average errors lower than 4% were found.
DO  - 10.1039/an9962101321
UR  - https://portalciencia.ull.es/documentos/5e3adb74299952629a023b8b
DP  - Dialnet - Portal de la Investigación
ER  -