Table 1. Data source and acquisition related to single-use face masks life cycle in this study

Life cycle	Contents	References
Pre-production stages	Pre-production stages of plastic-based single-use masks	Franklin Associates report [10]
	Pre-production stages of cellulose-based single-use masks	Chen [11]Krexner et al. [12]Corcelli et al. [13]
Production stages	Production stages of plastic-based and cellulose-based single-use masks	Turkmen [4]
Transportation stages	Transportation means of plastic-based and cellulose-based single-use masks	Turkmen [4]
Disposal stages	Status of waste generation and disposal	Korea Ministry of Environment: 2020 Status of waste generation and disposal [14]Anti-Corruption and Civil Rights Commission of Korea: Single-use face masks waste disposal plan [15]