| Spectroscopic analysis of microplastic contaminants in an urban wastewater treatment plant from Seoul, South Korea | |
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| 년도 | 2021 |
| 날짜 | 2021 Jan |
| 페이지 / 학회지명 |
Chemosphere |
| 논문저자 | Nguyen Binh Nguyen 1, Moon-Kyung Kim 2, Quang Trung Le 1, Dinh Nghi Ngo 1, Kyung-Duk Zoh 2, Sang-Woo Joo 3 |
| Link |
https://www.sciencedirect.com/science/article/abs/pii/S004565352032007…
117회 연결
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1 Department of Information Communication, Convergence Technology, Soongsil University, Seoul, 06978, South Korea; Department of Chemistry, Soongsil University, Seoul, 06978, South Korea. 2 Institute of Health & Environment, Seoul National University, Seoul, 08826, South Korea. 3 Department of Information Communication, Convergence Technology, Soongsil University, Seoul, 06978, South Korea; Department of Chemistry, Soongsil University, Seoul, 06978, South Korea. Electronic address: sjoo@ssu.ac.kr. Abstract In this study, a systematic multi-spectroscopic analysis of microplastics (MPs) sampled from a metropolitan area of Seoul was undertaken to elevate understanding of the role of wastewater treatment plants (WWTPs) in eliminating suspended contaminants including MPs before releasing the effluent water into the environment. We analyzed pollutants in influent and effluent samples from a WWTP in Seoul, South Korea. Spectroscopic and microscopic methods were used to analyze MPs. Fourier-transform infrared (FT-IR) spectroscopy in the wavenumber region between 4000 and 715 cm-1 was employed to estimate the abundance of MPs in wastewater. Stereomicroscope images and Nile red staining were used to facilely identify MPs in both influents and effluents to compare the results with those of FT-IR data. Hyperspectral imaging could identify MPs in the influent sample with the reflection method at 400-900 nm. Our preliminary results indicate that the most observed MPs after the wastewater were filtered by a 45 μm stainless steel mesh filter were polyethylene (PE) and polypropylene (PP). The total number of the prevalent MPs in influent samples decreased significantly. Nanostructure particles could be found by field-emission scanning electron microscopy (FE-SEM). Our combined multi-spectroscopic study should be helpful to provide a guideline for the rapid spectroscopic analysis of freshwater in the Han River, Seoul, South Korea. Keywords: Infrared; Microplastic detection; Nile red; Raman; Wastewater; Water contaminants. |
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연구성과