Determination of 2,4,6-TRICHLOROPHENOL in Beverages Using Voltammetry: Optimization and Validation Studies

• Published in: Food analytical methods Vol. 13; no. 4; pp. 1000 - 1007
• Main Authors: Schwab, Emanuele Dal Pisol, de Almeida, Sthéfane Valle, Felsner, Maria Lurdes, de Castro, Eryza Guimarães, Galli, Andressa
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.04.2020; Springer Nature B.V
• Subjects: 2,4,6-Trichlorophenol; Analytical Chemistry; Beverages; Boron; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Diamonds; Food Science; Linearity; Microbiology; Optimization; Reagents; Square waves; Trichlorophenol; Trichlorophenols; Voltammetry; Voltammetry; Method validation; Beverage pesticide; 2,4,6-trichlorophenol
• ISSN: 1936-9751; 1936-976X
• DOI: 10.1007/s12161-020-01716-4

This paper describes the optimization and in house validation of an electroanalytical method for the determination of 2,4,6-trichlorophenol (2,4,6-TCP) in beverages for the first time. Cyclic voltammetry and square wave voltammetry techniques, 0.1 mol L −1 Britton–Robinson buffer (pH 8.0) and boron-doped diamond electrode were used for this purpose. The system was optimized and the obtained analytical curves presented good linearity in the concentration range investigated; moreover, the linear model did not present a lack-of-fit. The limits of detection and quantification (0.15 μmol L −1 and 0.46 μmol L −1 , respectively) of the used method were low. In addition, this method presented good accuracy and precision (recovery rates between 90.0% and 118.0% and relative standard deviation values in the range of 0.74% to 1.51%). Thus, it was suggested that the developed electroanalytical method could be used for the determination of 2,4,6-TCP in beverages and presented advantages, such as speed, low cost, and low consumption of toxic reagents, compared with traditional methods.