Detection of triazine herbicides in water, juice, and tea using deep eutectic solvent-based emulsive liquid–liquid microextraction combined with high-performance liquid chromatography†

IF 2.7 3区化学 Q2 CHEMISTRY, ANALYTICAL

Analytical Methods Pub Date : 2024-11-26 DOI:10.1039/D4AY01823K

Yulin Wang, Yuxin Wang, Yarong Chen, Xiaojiao Zheng, Jiajun Han, Xu Jing and Jiali Yang

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Abstract

This study developed a deep eutectic solvent-based emulsive liquid–liquid microextraction method combined with high-performance liquid chromatography (DES-ELLME-HPLC) for the detection of triazine herbicides. The technique was validated for food sample detection. Hydrophobic DES was prepared by using tributylphosphine oxide and octanoic acid to replace toxic solvents. In ELLME, the prepared DES was mixed with distilled water and then added to samples for emulsification. During the emulsion, triazine herbicides are transferred from the sample to the extractant. The limit of detection was 0.008 mg L⁻¹, while the extraction recoveries ranged between 84.8% and 102.0%, exhibiting relative standard deviations between 0.3 and 4.9%. This pre-treatment technique is simple, fast, and green and can be applied to water, juice, and tea samples. Compared with traditional ELLME, DES pre-treatment solves the singularity of the extractant selection and allows the technique to be applied to multiple pesticides.

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深层共晶溶剂型乳化液液微萃取结合高效液相色谱法检测水、果汁和茶叶中的三嗪类除草剂。

本研究建立了一种深共晶溶剂基乳化液液微萃取结合高效液相色谱法（DES-ELLME-HPLC）检测三嗪类除草剂的方法。该方法在食品样品检测中得到验证。以氧化三烷基膦和辛酸代替有毒溶剂制备疏水DES。在ELLME中，制备的DES与蒸馏水混合，然后加入样品中进行乳化。在乳化过程中，三嗪类除草剂从样品转移到萃取剂。检出限为0.008 mg L-1，提取回收率为84.8% ~ 102.0%，相对标准偏差为0.3 ~ 4.9%。该前处理技术简单、快速、绿色环保，可用于水、果汁和茶叶样品。与传统的ELLME相比，DES预处理解决了萃取剂选择的单一性，使该技术可以应用于多种农药。

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