Since the discovery of the first artificial synthetic plastic, bakelite, polymer materials have been recognized as one of the most innovative fields of research. The plastic debris that is being piled up on the earth (called abandoned plastic litters) is now being observed everywhere on Earth, becoming an increasingly serious environmental threat. The term 'microplastics', created in 2004, now refers to plastic particles that are smaller than 5 mm, including all nano-sized plastic particles. However, there is no legal regulation, and there is still a lack of comprehensive definitions that practically include microplastic size standards. In this study, we will refer to “microplastics” as the English name, and look at how to identify these microplastics and propose new definitions that focus on their size. This study is expected to contribute to the domestic consensus on scientific definitions of microplastics.

ABSTRACT
1. 서 론
2. 마이크로플라스틱의 크기 정의에 관한연구 흐름
3. 마이크로플라스틱 분석방법
4. 결과 및 고찰
5. 결 론
References

• 권범근(조선이공대학교 생명환경화공과) | Bumgun Kwon (Department of BioeEvironmental & Chemical Engineering, Chosun College of Science & Technology)
• 이상훈(윈텍글로비스(주)) | Sanghoon Lee (Wintec Glovis)
• 라현주(윈텍글로비스(주)) | Hynjoo Rah (Wintec Glovis)
• 백진(성균관대학교) | Jin Paek (Graduate school of water resources, Sungkyunkwan University)
• 김극태(수원대학교 환경에너지공학과) | Keugtae Kim (Department of Environmental & Energy Engineering, Suwon University) Corresponding author