Research output: Contribution to journal › Article › peer-review
1-(o-Tolyl)thiourea-based deep eutectic solvent as a stationary phase in flow injection analysis system for mercury and copper determination in edible oils. / Shishov, A.; Markova, U.; Mulloyarova, V.; Tolstoy, P.; Shkaeva, N.; Kosyakov, D.; Das, N.K.; Banerjee, T.
In: Talanta, Vol. 282, 01.01.2025.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - 1-(o-Tolyl)thiourea-based deep eutectic solvent as a stationary phase in flow injection analysis system for mercury and copper determination in edible oils
AU - Shishov, A.
AU - Markova, U.
AU - Mulloyarova, V.
AU - Tolstoy, P.
AU - Shkaeva, N.
AU - Kosyakov, D.
AU - Das, N.K.
AU - Banerjee, T.
N1 - Export Date: 27 October 2024 CODEN: TLNTA Сведения о финансировании: Saint Petersburg State University, SPbU Сведения о финансировании: Russian Science Foundation, RSF, 24-43-02023 Текст о финансировании 1: Andrey Shishov gratefully acknowledges financial support of Russian Science Foundation (research projects No. 24-43-02023). Scientific research was performed using the equipment of the Research Parks of St. Petersburg State University (Chemical Analysis and Materials Research Centre, Center for Magnetic Resonance, Thermogravimetric and Calorimetric Research Centre). DSC studies were partially performed using the instrumentation of the Core Facility Center \u201CArktika\u201D of the Northern (Arctic) Federal University. Tamal Banerjee acknowledges the approval of funding vide DST/IC/RSF/2024/333 under International Cooperation Division under India-Russia Joint Research Call Scheme. We would also like to thank the PARAM KAMRUPA supercomputer for computational time.
PY - 2025/1/1
Y1 - 2025/1/1
N2 - In this work, a novel deep eutectic solvent (DES) composed of thymol and 1-(o Tolyl)thiourea 9/1 (mol) is presented for the first time. This DES has not been described in the literature. This DES was first used as a stationary phase in an extraction column integrated into a flow injection analysis system for the simultaneous determination of mercury and copper in edible oils. The automated approach involves passing an aqueous sample solution obtained after microwave mineralization through a microcolumn of DES retained on polytetrafluoroethylene. This leading to the extraction and concentration of the analytes. The metals are then eluted with an aqueous thiourea solution for subsequent analysis by inductively coupled plasma-optical emission spectrometry. The limits of detection (LODs) for mercury and copper were 3 μg L⁻1 and 2.5 μg L⁻1, respectively. The approach demonstrated high accuracy. Relative standard deviations (RSD) for repeatability and inter-day reproducibility ranged from 3 % to 11 %. Extraction recovery of both metals exceeded 95 %, indicating the high efficiency of the DES-based extraction process. Environmental assessment using the AGREEprep method yielded a favorable environmental index of 0.54, highlighting the robustness of the approach. This novel use of DES as a stationary phase in flow injection analysis system provides a robust, efficient and environmentally friendly approach to the determination of trace metals in edible oils. This method can also be applied to the analysis of other samples. © 2024 Elsevier B.V.
AB - In this work, a novel deep eutectic solvent (DES) composed of thymol and 1-(o Tolyl)thiourea 9/1 (mol) is presented for the first time. This DES has not been described in the literature. This DES was first used as a stationary phase in an extraction column integrated into a flow injection analysis system for the simultaneous determination of mercury and copper in edible oils. The automated approach involves passing an aqueous sample solution obtained after microwave mineralization through a microcolumn of DES retained on polytetrafluoroethylene. This leading to the extraction and concentration of the analytes. The metals are then eluted with an aqueous thiourea solution for subsequent analysis by inductively coupled plasma-optical emission spectrometry. The limits of detection (LODs) for mercury and copper were 3 μg L⁻1 and 2.5 μg L⁻1, respectively. The approach demonstrated high accuracy. Relative standard deviations (RSD) for repeatability and inter-day reproducibility ranged from 3 % to 11 %. Extraction recovery of both metals exceeded 95 %, indicating the high efficiency of the DES-based extraction process. Environmental assessment using the AGREEprep method yielded a favorable environmental index of 0.54, highlighting the robustness of the approach. This novel use of DES as a stationary phase in flow injection analysis system provides a robust, efficient and environmentally friendly approach to the determination of trace metals in edible oils. This method can also be applied to the analysis of other samples. © 2024 Elsevier B.V.
KW - Deep eutectic solvent
KW - Edible oils
KW - Flow injection analysis
KW - Green chemistry
KW - Trace metals
KW - Copper
KW - Metal analysis
KW - Optical emission spectroscopy
KW - Thioureas
KW - Trace analysis
KW - Copper determination
KW - Deep eutectic solvents
KW - Extraction columns
KW - Flow injection analysis systems
KW - Green-chemistry
KW - Mercury determination
KW - Simultaneous determinations
KW - Stationary phase
KW - Trace metal
UR - https://www.mendeley.com/catalogue/bf92a8e1-1913-3b22-b480-b66fd0f2c669/
U2 - 10.1016/j.talanta.2024.127079
DO - 10.1016/j.talanta.2024.127079
M3 - статья
VL - 282
JO - Talanta
JF - Talanta
SN - 0039-9140
ER -
ID: 126460638