Abstract The use of electromagnetic waves to improve the efficiency of analytical separation methods has received high attention in recent years. This is done in two ways, one involving the use of a magnetic absorbents and the other one using an external magnetic field to enhance the extraction efficiency. In this review, the application of magnetic field for enhancing the selectivity and sensitivity of analytical sample preparation methods, by focusing on solid-phase microextraction (SPME), is surveyed and evaluated. Additionally, the efficiency and reliability of different magnetic sorbent-enhanced SPME and magnetic field-enhanced SPME methods are discussed. It was revealed that applying an external magnetic field in the SPME techniques improves the analytical figure of merits, particularly in complex matrices like human body fluids. It was demonstrated that the use of the external magnetic field in SPME can increase fiber’s lifespan. Additionally, the enhancing effect of the external electromagnetic field, due to the paramagnetic attraction and diamagnetic repulsion, is discussed. GRAPHICAL ABSTRACT

中文翻译：

---

磁场辅助固相微萃取技术综述

摘要 近年来，利用电磁波来提高分析分离方法的效率受到了高度重视。这是通过两种方式完成的，一种涉及使用磁性吸收剂，另一种使用外部磁场来提高提取效率。在这篇综述中，通过关注固相微萃取 (SPME)，对磁场在提高分析样品制备方法的选择性和灵敏度方面的应用进行了调查和评估。此外，还讨论了不同磁性吸附剂增强 SPME 和磁场增强 SPME 方法的效率和可靠性。结果表明，在 SPME 技术中应用外部磁场可以提高分析品质因数，尤其是在人体体液等复杂基质中。结果表明，在 SPME 中使用外部磁场可以增加纤维的寿命。此外，还讨论了外部电磁场由于顺磁吸引力和抗磁排斥而产生的增强效应。图形概要