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Taeksu Kim(김택수),Chanjoo Rhu(유찬주),Dongsuk Kim(김동석),Seokjin Noh(노석진) 환경독성보건학회 2021 한국독성학회 심포지움 및 학술발표회 Vol.2021 No.5
Microplastics (MPs) exist in various environmental media such as soil, atmosphere and marine. Recently, some studies reported that they will be affect the ecosystem as well as human health depending on their composition, size and shape. So far, many studies focused on MPs pollution in the marine environment, whereas it has been reported that much of marine MPs are transmitted from terrestrial environment. Therefore, it is important to understand and monitor MPs pollution in terrestrial environments such as soil, atmosphere, and water. However, there are no optimized quantitative analysis technology considering various environment and standardized method of MPs. In this study, thermal analysis is investigated using different analytical techniques for quali- and quantitative analysis of MPs such as TGA-FTIR, Py-GC-MS and TED-GC-MS. Thermal analysis are optimized using reference material such as HDPE, PS. Qualitative analysis was possible with temperature-based IR spectrum because of different thermal decomposition temperature. The results of experiments show that TGA-FTIR, Py-GC-MS and TED-GC-MS can be used to identify and quantify HDPE and PS. There are no differences of thermal decomposition behaviors by various size of MPs (1~20㎛, 20~100㎛, 100~500㎛). In addition, mixture of HDPE and PS could be analyzed simultaneously and degradation temperature is shifted.