A green and simple method, dynamic microwave-assisted micelle extraction coupled with cloud point preconcentration, was developed for the determination of triazine herbicides in soil samples. The method has the advantages of those two extraction procedures, which could eliminate the interferences from complex soil samples greatly. Non-ionic surfactant Triton X-114 aqueous solution used as extraction solvent was continuously pumped into soil samples. The resulting extract was heated and centrifuged in the presence of NaCl. After centrifugation, the analytes were enriched into the surfactant-rich phase. No filtration or cleaning steps were required. Several key parameters were investigated. The Box–Behnken design was applied to optimize the experimental factors involved in the dynamic microwave-assisted micelle extraction. Good linearity was observed in the range of 1.00–250.00 μg kg−1. The limits of detection were ranged between 0.26 and 1.71 μg kg−1. The recoveries of analytes ranged from 80.3 to 98.3% with the relative standard deviations ranging from 1.1 to 6.6%.

中文翻译：

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动态微波辅助胶束提取结合浊点预浓缩测定土壤中三嗪类除草剂

建立了一种绿色、简便的动态微波辅助胶束萃取结合浊点预浓缩法测定土壤样品中三嗪类除草剂的含量。该方法具有这两种提取方法的优点，可以大大消除复杂土壤样品的干扰。将用作萃取溶剂的非离子表面活性剂 Triton X-114 水溶液连续泵入土壤样品中。将所得提取物在NaCl存在下加热并离心。离心后，分析物富集到富含表面活性剂的相中。不需要过滤或清洁步骤。研究了几个关键参数。Box-Behnken 设计用于优化动态微波辅助胶束提取中涉及的实验因素。在 1.00–250.00 μg kg-1 范围内观察到良好的线性。检测限在 0.26 和 1.71 μg kg-1 之间。分析物的回收率范围为 80.3 至 98.3%，相对标准偏差范围为 1.1 至 6.6%。