Voltammetric quantification of 4-nitrophenol using a multivariate optimized plated bismuth film electrode.

NUÑEZ, RODRIGO; MORENO BETANCOURTH, JESSICA; ORTIZ, PATRICIA INÉS; PFAFFEN, VALERIA

INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH

AMER CHEMICAL SOC

Año: 2019

0888-5885

n this study the multivariate optimization of bismuth film deposition (BiFE) on glassy carbon electrode, together with square wave voltametry (SWV) parameters for nitrophenol quantification is described for the first time. For this purpose response surface methodology (RSM) and desirability function (DF) were applied to a Box?Behnken design (BBD). For the BiFE deposition procedure, the relationship between the reduction current peak (ip) and standard deviation (SD) values with time, potential deposition and Bi (III) concentration were analyzed, meanwhile for frequency, step and amplitude only the relationship with ip was considered. The pH influence in nitrophenol determination was carried on by univariate analysis. After parameters optimization a LOD of 3.4 × 10−6 mol L−1 was observed.