Liquid phase micro-extraction (LPME) of metals has showed its potential for sample preparation in environmental analysis. In particular, the incorporation of ionic liquids to LPME (IL-LPME) has gotten increasing interest due to their unique properties as organic salts liquid at room temperature. In the last years, IL-LPME of metals has evolved to more efficient and selective extraction methods thanks to the development of task specific ionic liquids, and deep eutectic solvents. ILs have been implemented in the main LPME modalities: SDME, DLLME and HFLPME, resulting in new versions of these techniques.

In this review we have analyzed and discussed the latest developments done in IL-LPME of metals, their advantages and limitations, as well as the potential fields of future development.

金属的液相微萃取 (LPME) 已显示其在环境分析中的样品制备潜力。特别是，将离子液体加入 LPME (IL-LPME) 因其在室温下作为有机盐液体的独特性质而受到越来越多的关注。在过去几年中，由于特定任务的离子液体和低共熔溶剂的发展，金属的 IL-LPME 已演变为更有效和选择性的提取方法。ILs 已经在主要的 LPME 模式中实现：SDME、DLLME 和 HFLPME，从而产生了这些技术的新版本。

在这篇综述中，我们分析和讨论了金属 IL-LPME 的最新发展、它们的优势和局限性，以及未来发展的潜在领域。