지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.10
- 수록면
- 89 - 97 (9page)
이용수
초록· 키워드
오류제보하기
Microplastics coexist with the chemical reactive oxygen species in natural waters, however, there is still a lack to elucidate the effect of these radicals on the microplastic surficial oxidation. In this study, the ozonation of polyethylene microplastics was carried out under varying ozone dosages ranging from 4 to 7 ㎎/min for 60, 120 and 180 min, where its ozone uptake was iodometrically compared and surficial modification was spectroscopically analyzed using FTIR and XPS. For that, the lowest ozone uptake was 16% at 4 ㎎/min ozone supplied for 60 min whereas the highest was observed of 44% at 7 ㎎/min ozone added for 180 min. Moreover, in the FTIR analysis, carbonyl (1,600-1,800 ㎝<SUP>-1</SUP>) and hydroxyl (3,200-3,600 ㎝<SUP>-1</SUP>) indices were improved more than 20% and 13% when they were ozonized at 7 mg/min for 180 min compared to 4 ㎎/min for 60 min, respectively. XPS also revealed that 7 ㎎/min of ozone supplied for 180 min provided the highest of oxygen functionalities, but while there was no significant change in C-C bond. It can be concluded that the surficial modification of PE including formation of oxygen functionalities could be more preferably influenced by the reaction time than ozone dosages.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusion
References
참고문헌 (43)
참고문헌 신청
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Masura J, Baker JE, Foster GD, Arthur C, Herring C. Laboratory methods for the analysis of microplastics in the marine environment: recommendations for quantifying synthetic particles in waters and sediments. 2015.
Sun X, Chen B, Li Q, et al. Toxicities of polystyrene nano-and microplastics toward marine bacterium Halomonas alkaliphila. Sci. Total Environ. 2018;642:1378-1385.
Nomura T, Tani S, Yamamoto M, et al. Cytotoxicity and colloidal behavior of polystyrene latex nanoparticles toward filamentous fungi in isotonic solutions. Chemosphere 2016;149:84-90.
Graham ER, Thompson JT. Deposit-and suspension-feeding sea cucumbers (Echinodermata) ingest plastic fragments. J. Exp. Mar. Bio. Ecol. 2009;368:22-29.
Masura J, Baker JE, Foster GD, Arthur C, Herring C. Laboratory methods for the analysis of microplastics in the marine environment: recommendations for quantifying synthetic particles in waters and sediments. 2015.
Sun X, Chen B, Li Q, et al. Toxicities of polystyrene nano-and microplastics toward marine bacterium Halomonas alkaliphila. Sci. Total Environ. 2018;642:1378-1385.
Nomura T, Tani S, Yamamoto M, et al. Cytotoxicity and colloidal behavior of polystyrene latex nanoparticles toward filamentous fungi in isotonic solutions. Chemosphere 2016;149:84-90.
Graham ER, Thompson JT. Deposit-and suspension-feeding sea cucumbers (Echinodermata) ingest plastic fragments. J. Exp. Mar. Bio. Ecol. 2009;368:22-29.
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