Electrochemical Sensing Platform Based on Renewable Carbon Modified with Antimony Nanoparticles for Methylparaben Detection in Personal Care Products

Abstract

This paper describes for the first time the surface modification of glassy carbon (GC) electrodes with bamboo-based renewable carbon (RC) and antimony nanoparticles (SbNPs) for the determination of methylparaben (MePa) in personal care products (PCPs). The synthesized RC-SbNP material was successfully characterized by scanning electron microcopy, energy-dispersive X-ray spectroscopy and cyclic voltammetry. The proposed sensor was applied in the detection of MePa using the optimized parameters by differential pulse voltammetry (DPV). The analytical range for detection of MePa was 0.2 to 9.0 µmol L−1, with limits of detection and quantification of 0.05 µmol L−1 and 0.16 µmol L−1, respectively. The determination of MePa in real PCP samples was performed using the proposed GC/RC-SbNP sensor by DPV and UV-vis spectrophotometry as comparative methodology. The use of RC-SbNP material for the development of electrochemical sensors brings a fresh approach to low-cost devices for MePa analysis.

Copper Nanoparticles and Reduced Graphene Oxide as an Electrode Modifier for the Development of an Electrochemical Sensing Platform for Chloroquine Phosphate Determination

“…Then, concentrations of 0.5, The influence of some interferents on the anodic peak of the developed sensor in the presence of phosphate chloroquine was investigated under the optimized conditions of the sensor. Estriol is a hormone that is found in aquatic matrices [35]; methylparaben [29] is commonly used in foods, pharmaceuticals, and personal care products and has been found in water matrices. Therefore, these analytes were used as interferents for the study of the recuperation of the signal of CQP.…”

“…Certain analytical methods have been proposed for the analysis of chloroquine and its derivatives, such as ultraviolet spectrophotometry [10][11][12][13], immunoassay [14], chemiluminescence [15], nuclear magnetic resonance [16], spectrofluorimetry [17], and capillary electrophoresis [18], and most studies' methodologies are based on chromatography [19][20][21][22][23][24][25][26][27][28], including high-performance liquid chromatography (HPLC) [22][23][24][25][26][27] and gas chromatography [28]. However, some of these techniques require solid-phase extraction, liquid-liquid extraction, high-performance solvents (chromatography grade), and highly trained personnel [20,29], which makes it difficult to perform these techniques in some cases. Due to certain advantages of electrochemical sensors, such as high sensitivity, low-cost equipment, fast analysis, miniaturization capacity, and the possibility of performing in situ analysis [30][31][32], they have gained prominence in the development of methodologies and analytical protocols for the detection of these compounds.…”

Determination of Fluoxetine in Weight Loss Herbal Medicine Using an Electrochemical Sensor Based on rGO-CuNPs

“…Additionally, metallic nanoparticles such as gold, silver, copper, and antimony are commonly employed as modifiers in electrochemical sensors due to their high chemical stability, good conductivity, and large surface area [20,21]. Copper nanoparticles, specifically, have some particularities that are of interest for electrochemical sensing applications, such as its electrical and catalytic properties, due to a large surface-to-volume ratio.…”