Salt-Assisted Graphene Oxide Dispersive Solid Phase Microextraction for Sensitive Detection of Malachite Green and Crystal Violet by HPLC

In the present work, a novel solid‐phase microextraction on a screw (MES) was employed to extract cationic dyes (malachite green, methylene blue, and rhodamine B) from food samples and fish breeding pool water. The sulfonated poly(styrene‐co‐divinylbenzene) was electrophoretically deposited on the surface of the grooves of a screw. Then the screw was placed inside a silicon tube as a holder to create a channel to run a test solution through it. The extracted dyes on the coated screw were eluted by a suitable eluent. High‐performance liquid chromatography with an ultraviolet/visible detector was utilized for the separation and analysis of the analytes. The effective parameters of the analyte extraction efficiency were optimized. Under optimum conditions, the limits of detection were 0.15 μg/L, and calibration curves were linear in the range of 0.50–250.00 μg/L, with coefficients of determination > 0.989 for all studied dyes. The relative standard deviations of intra and inter‐day (n = 3) were in the range of 2.8%–7.0% and 7.0%–9.5%, respectively. The MES was applied as a simple and repeatable method with acceptable relative recoveries (82.0%–103.0%) for the determination of cationic dyes in grape nectar, ice pop, jelly powder, and fish breeding pool water.

Section: Comparison Of the Proposed Methods With Other Similar Techni...mentioning

confidence: 99%

Electrophoretically deposited sulfonated poly(styrene‐co‐divinylbenzene) on a screw for microextraction of cationic dyes from aqueous solutions

Osooli,

Yamini,

Tabibpour

et al. 2023

“…To date, various methodologies including solid‐phase adsorption [1], membrane extraction [2], and liquid‐liquid extraction [3] have been explored for the extraction and separation of MG and CV. Techniques such as magnetic solid‐phase extraction (MSPE) [4, 5], dispersive SPE (d‐SPE) [6], and microextraction [7–12], coupled with analytical methods like high‐performance liquid chromatography (HPLC) [13] and LC‐tandem mass spectrometry (LC‐MS/MS) [14], have achieved the separation and detection of these dyes at low concentrations in complex environmental samples. The development of novel and high‐efficiency adsorbents is the key to these techniques.…”

Section: Introductionmentioning

confidence: 99%

Carboxyl‐functionalized covalent organic frameworks for the extraction of malachite green and crystal violet in environmental water samples prior to quantification by high‐performance liquid chromatography

Lai,

Hu,

Tang

et al. 2024

In this study, monodisperse, uniform, and spherical covalent organic frameworks (COFs) were synthesized using 1,3,5‐tris (4‐aminophenyl) benzene and 1,3,5‐tricarboxaldehyde benzene at room temperature. Post‐modification of 6‐aminocaproic acid on the COFs yielded carboxyl‐modified COFs (COFs‐COOH). The modification enhanced the hydrophilicity and adsorption efficiencies of COFs‐COOH for malachite green (MG) and crystal violet (CV). A COFs‐COOH‐based dispersive solid‐phase extraction coupled with high‐performance liquid chromatography was developed for the analysis of MG and CV. The method showed a linear range from 10 to 1000 ng/mL with detection limits of 1.82 and 0.70 ng/mL for MG and CV detection, respectively. The recoveries of MG and CV from water samples collected from fish farms and markets ranged from 91.63% to 107.10% with relative standard deviations below 5%. Reproducibility tests demonstrated that the adsorption efficiencies of COFs‐COOH were maintained at above 85.86% over 15 cycles. The study verified the potential of COFs‐COOH as sorbents for the enrichment and separation of triphenylmethane dyes from complex samples.

“…Reported research is novel and fits well with the recent trend for seeking of new inorganic and/or organic carbon materials, particularly based on polycyclic aromatic hydrocarbons, graphite, graphene, fullerenes, carbon nanotubes, or nanodiamonds. Such new materials may exhibit high‐throughput separation properties improving selectivity of common extraction and separation techniques including SPE, TLC, GC, and HPLC . An important issue is that such materials should be relatively nonexpensive and may work in both analytical as well as preparative modes.…”

mentioning

confidence: 99%

Supplementary evaluation of retention and physicochemical data involving multivariate analysis approach

Zarzycki

2016

This commentary highlights the issue of real differences between stationary phases that were studied in an experimental paper entitled "Novel stationary phases based on asphaltenes for gas chromatography" prepared by Grzegorz Boczkaj and co-authors (J. Sep. Sci. 2016, 39, 2527-2536). Particularly, a chemometric study has revealed relatively small differences between stationary phases investigated. Moreover, simple principle component analysis calculations enabled the identification of the outlier points within large raw dataset and to find the parameters (variables) that may carry equal information.