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Martins, A.C., Bukman, L., Vargas, A.M.M., Barizão, É.O., Moraes, J.C.G., Visentainer, J.V. and Almeida, V.C. (2013) The Antioxidant Activity of Teas Measured by the FRAP Method Adapted to the FIA System: Optimising the Conditions Using the Response Surface Methodology. Food Chemistry, 138, 574-580.
https://doi.org/10.1016/j.foodchem.2012.10.143

has been cited by the following article:

• TITLE: On-Line Photoinduced Fluorescence for Carbamazepine Determination after Multivariate Optimization

  AUTHORS: Cecilia Henestrosa, Cecilia Peralta, Leslie Aragón, Liliana FernÁndez, Gimena Acosta

  KEYWORDS: Online Photoinduced Fluorescence; Multivariate Optimization, Carbamazepine, Pharmaceutical Samples

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.10 No.11, November 4, 2019

  ABSTRACT: This work presents a simple and sensitive flow injection fluorimetric method for the determination of carbamazepine (CBZ) in pharmaceutical samples. It is based on the fluorescence signal measurement of the product generated by photoinduced (λex = 251 nm; λem = 434 nm) using a flow injection manifold containing an online homemade photoreactor. In order to optimize the experimental setup, the variable conditions were studied using a multivariate optimization method, thus finding the set of optimum parameters according to the evaluated responses (sensitivity and sampling frequency) and minimizing the number of experiments performed. Under optimal experimental conditions, linear relationship with good correlation coefficient (0.9956) was found between the fluorescence intensity and CBZ concentration in the range of 0.13 - 40 μg·mL-1. The limit of detection was 0.04 μg·mL-1. The precision of the method was satisfactory; the values of relative standard deviations were better than 4.36%. The proposed method was validated and successfully applied to the determination of CBZ in pharmaceuticals with good accuracy; being the recovery values from 89.45% - 112.20%.