The recognition and detection of metal ions present in biological and environmental samples have attracted great attention in recent years. Various analytical techniques are used to detect metal ions. Among these, the fluorescence technique is among the emerging methods because of its simplicity, selectivity, and applicability to bioimaging. Thus, this review particularly explores paper-based fluorescence chemosensors involved in metal ion detection. Significantly, the first section addresses relevant research on metal ion detection involving various techniques. In the second section, several sensing strategies such as photoinduced electron transfer, fluorescence resonance energy transfer, intramolecular charge transfer, chelation enhanced fluorescence, excited-state intramolecular proton transfer, and aggregation-induced emission for the detection of target metal ions (aluminum, copper, iron, lead, mercury, and zinc) are investigated. The third section particularly discusses the role of fluorescence sensor materials (e.g., fluorescein, rhodamine, naphthalimide, BODIPY, carbon dots, quantum dots) involved in the detection processes and their advantages and limitations. Overall, this article reviews 90 research articles on paper-based fluorescence chemosensors for metal ion detection published until 2021.

近年来，生物和环境样品中存在的金属离子的识别和检测引起了极大的关注。各种分析技术用于检测金属离子。其中，荧光技术因其简单性，选择性和对生物成像的适用性而成为新兴方法。因此，这篇综述特别探讨了涉及金属离子检测的纸基荧光化学传感器。重要的是，第一部分论述了涉及各种技术的金属离子检测的相关研究。在第二部分中，介绍了几种传感策略，例如光致电子转移，荧光共振能量转移，分子内电荷转移，螯合增强荧光，激发态分子内质子转移，并研究了聚集诱导的发射以检测目标金属离子（铝，铜，铁，铅，汞和锌）。第三部分特别讨论了检测过程中涉及的荧光传感器材料（例如，荧光素，若丹明，萘二甲酰亚胺，BODIPY，碳点，量子点）的作用及其优势和局限性。总体而言，本文回顾了2021年之前发表的90篇有关用于金属离子检测的纸基荧光化学传感器的研究文章。