Ongoing pollution of the marine environment requires quick and reasonably priced analytical techniques that allow routine checking of the concentrations of persistent organic pollutants (POPs) found in different samples and, in particular, coastal samples. Miniaturized extraction techniques enable us to analyze samples more quickly and cheaply. These methodologies are highly effective for analysis of liquid samples, but not for solid samples, and even less so for microplastic pollutant analyses. A miniaturized solid-liquid-liquid extraction technique (μSLLE) has been developed to extract, pre-concentrate, and analyze up to 27 POPs from marine microplastics, using a quick methodology which does not require drying of the extract for its preconcentration. Target pollutants were analyzed using single quadrupole gas chromatography with mass spectrometry (GC-MS). The method has been optimized and validated, and was applied to different marine microplastic samples collected on the islands of Gran Canaria and Fuerteventura (Canary Islands, Spain).

Graphical abstract

中文翻译：

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固液微萃取法测定微塑料中的持久性污染物

持续的海洋环境污染需要快速且价格合理的分析技术，以便能够常规检查在不同样品（尤其是沿海样品）中发现的持久性有机污染物（POPs）的浓度。小型化的提取技术使我们能够更快，更便宜地分析样品。这些方法对于液体样品的分析非常有效，但对于固体样品的分析却非常无效，对于微塑性污染物分析则更是如此。已开发出一种小型化的固液液萃取技术（μSLLE），可以使用一种快速的方法从海洋微塑料中萃取，预浓缩和分析多达27种持久性有机污染物，该方法不需要对其进行预浓缩就可以将其干燥。使用单四极杆气相色谱质谱仪（GC-MS）分析目标污染物。该方法已经过优化和验证，已应用于在大加那利岛和富埃特文图拉岛（西班牙加那利群岛）上收集的各种海洋微塑性样品。

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