Portable Detection Methods for Marine Micro-nano Plastics

Abstract

Every year, millions of tons of plastic waste enter the ocean, gradually breaking into micro-nano plastics, threatening the ecosystem and human health. The detection of Marine micro-nano plastics is an important link in assessing ecological risks and guiding the implementation of governance. The traditional detection technologies rely on complex equipment and pretreatment, making it difficult to achieve rapid and on-site detection of micro-nano plastics in seawater environments. Portable detection methods, which can realize on-site and rapid distributed detection of Marine micro-nano plastics, thus attract more and more attention. Herein, recent existing portable Marine micro-nano plastics detection methods are introduced. Firstly, the conventional methods of Marine micro-nano plastics sensors and the corresponding advances in portable area are presented. The conventional methods include pyrolysis gas chromatography-mass spectrometry, infrared spectroscopy and Raman spectroscopy, Then, the novel detection methods developed in recent 5 years for portable Marine micro-nano plastics detection are discussed, such as photoluminescence spectroscopy, triboelectric nanogenerator-based self-powered sensor and electrochemical sensor. Finally, the challenges for the development of portable Marine micro-nano plastics detection methods are demonstrated for the practical application.