Application of a modified MWCNT-based d-µSPE procedure for determination of bisphenols in soft drinks. (15th August 2022)

• Record Type: Journal Article
• Authors: Sobhi, Hamid Reza; Mohammadzadeh, Farzaneh; Behbahani, Mohammad; Yeganeh, Mojtaba; Esrafili, Ali
• Is Part Of: Food chemistry. Volume 385(2022)
• Publication Date: 2022-08-15
• Subjects: Bisphenols -- Water -- Soft drinks -- Dispersive solid phase extraction -- Modified multi-walled carbon nanotubes; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.132644
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: Dispersive µ-solid phase extraction. Carboxylated multi-walled carbon nanotubes modified with silver nanoparticles. Trace detection of two bisphenolic compounds at µg L −1 levels. Fast and efficient extraction of bisphenol A and bisphenol S. Sample pre-treatment of water and soft drink samples. Abstract: Herein, a facile dispersive micro-solid phase extraction (d-µSPE) procedure using carboxylated multi-walled carbon nanotubes modified with silver nanoparticles (Ag/MWCNTs-COOH) was successfully developed for the adsorption and subsequent determination of low levels of two well-known contaminants, namely bisphenol A and S (BPA and BPS) in water and soft drink samples. The detection and measurement of the above-mentioned compounds were performed by HPLC-UV instrument. The applied d-µSPE procedure has several advantages such as rapidity, high degree of sensitivity, precision and efficiency. A combination of polar/non-polar interactions seems to play a key role in the adsorption process. Under the optimized conditions, the calibration curves were linear over the concentration range of 1–500 µg/L for the both targets. The practical limit of quantifications (LOQ) for the both analytes were determined to be 1.0 µg/L. The average relative recoveries obtained from the fortified samples varied between 92 and 110% with the relative standard deviations (RSD%) of 2.9–9.5%.