Determination of parathion-methyl in water, juice, tea, and vinegar using cyclodextrin-based dispersive liquid-liquid microextraction combined with smartphone digital image colorimetry

文献类型： 外文期刊

第一作者： Guo, Xingle

作者： Guo, Xingle;Huang, Xin;Jiang, Haijuan;Jia, Liyan;Jing, Xu;Guo, Xingle;Wu, Junxue;Zhang, Guisen

作者机构：

关键词： Parathion-methyl; dispersive liquid-liquid microextraction; smartphone; digital image colorimetry; cyclodextrin; deep eutectic solvent

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY （ 影响因子：2.6； 五年影响因子：2.5 ）

ISSN： 0306-7319

年卷期： 2023 年

页码：

收录情况： SCI

摘要： A pre-treatment and analytical procedure for parathion-methyl (PM) in food samples was developed using cyclodextrin-based dispersive liquid-liquid microextraction (CD-DLLME) accompanied by a smartphone digital image colorimetry (SDIC). The extractant used was a green deep eutectic solvent synthesised from hexanoic acid and menthol. Cyclodextrin aqueous solutions were used as the green dispersion solvents to complete the dispersion and extraction process. Thus, a simple, fast, and environmentally friendly pre-treatment method was proposed. PM that was hydrolysed to a yellow product under an alkaline environment, and the colour intensity could be obtained using a smartphone for analysis. PM showed linearity ranging from 0.0020 to 1.0000 mg L-1, with limits of quantification and detection of 0.0020 and 0.0006 mg L-1. This method has been successfully applied in water, juice, tea, and vinegar, with recoveries ranging from 80.4 to 105.7% and relative standard deviation between 1.3 and 3.6%. This method can determine the concentration of PM in different food samples.

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