Application of Pyrolysis Gas Chromatography-Mass Spectrometry (PY-GC/MS) in Analysis of Microplastics
Plastics are synthetic materials whose advantages such as low cost, durability, light weight, and ease of manufacture have made these polymers ubiquitous in daily life. In recent years, scientists, environmental protection departments and the public have become increasingly concerned about plastic pollution, especially micro/nano plastics. Usually, studying microplastics in various samples requires separating microplastic particles from the samples and then using spectroscopic methods to identify and analyze them. Spectroscopic techniques allow for qualitative analysis of microplastics but do not provide access to their accurate masses, which are important for toxicological assessments. In order to simultaneously achieve qualitative and quantitative analysis of microplastics in samples, many researchers have begun to apply thermal pyrolysis-gas chromatography/mass spectrometry (PY-GC/MS) in the analysis of microplastics. In this article, application of PY-GC/MS in the study of microplastics in the past five years was reviewed, including an introduction to PY-GC/MS technology, sample collection, sample preprocessing, establishment of instrumental analysis methods, and problems and prospects.