Center for Harbin Natural Resources Comprehensive Survey, China Geological Survey, Harbin, 150039, P. R. China.
Key Laboratory of Natural Resource Coupling Process and Effects, Beijing, 100055, P. R. China.
Anal Methods. 2023 Aug 31;15(34):4275-4281. doi: 10.1039/d3ay00958k.
A rapid, precise, and environmentally friendly approach utilizing an ultrasound assisted deep eutectic solvent-based extraction method was developed for the extraction of Ca, Fe, K, Mg, Mn, Na, P, S and Zn from plant samples. The investigation was conducted on deep eutectic solvents that are based on choline chloride and carboxylic acids. The determination of target analytes in the extracts was carried out using inductively coupled plasma-optical emission spectrometry (ICP-OES). The DESs based on malic acid were found to exhibit the highest extraction recovery values (95-106%). The parameters affecting the extraction of target analytes were optimized using standard reference materials. The target analytes can be effectively extracted from plant samples using 0.5 g of DESs and ultrasonication for 40 minutes. The determination results of the reference samples indicated that the relative error (RE) was below 15.1%, and the relative standard deviation (RSD) was less than 6.3%, demonstrating excellent accuracy and precision. The proposed method was employed to quantify target analytes in actual plant samples. The accuracy of this method was not significantly different from that of the microwave digestion method. The proposed method has been demonstrated to be a valid approach for the determination of target elements in actual plant samples.
利用超声辅助的深共晶溶剂萃取法，开发了一种快速、准确且环保的方法，用于从植物样品中提取 Ca、Fe、K、Mg、Mn、Na、P、S 和 Zn。研究了基于胆碱氯化物和羧酸的深共晶溶剂。采用电感耦合等离子体-光学发射光谱法（ICP-OES）测定提取物中的目标分析物。发现基于苹果酸的 DES 具有最高的萃取回收率（95-106%）。使用标准参考物质优化了影响目标分析物萃取的参数。使用 0.5 g 的 DES 和超声处理 40 分钟，可以有效地从植物样品中提取目标分析物。参考样品的测定结果表明，相对误差（RE）低于 15.1%，相对标准偏差（RSD）小于 6.3%，表明具有优异的准确性和精密度。该方法用于定量实际植物样品中的目标分析物。该方法的准确性与微波消解法无显著差异。该方法已被证明是一种有效的实际植物样品中目标元素测定方法。
