[Dynamic Material Flow Analysis of Perfluorooctane Sulfonate in China: 1985-2019].

• DOI: 10.13227/j.hjkx.202101120
• Publication Date: 2021-09-08
• Authors: Jiayu Wang; Jingwen Chen; Weihao Tang; Yunhan Cui; Zhongyu Wang; Guobao Song; Wei‐Qiang Chen
• Keywords: Material flow analysis; Perfluorooctane

Perfluorooctane sulfonates (PFOS) are regarded as a category of chemicals with persistence, bioaccumulation, and toxicity. Understanding dynamic flows, stocks, emissions PFOS on macro spatial temporal scale can help provide scientific basis for their sound management. In this work, material flow analysis (d-MFA) model was built to characterize analyze the cycles in mainland China over period 1985-2019. Flows, environmental were calculated sensitivity uncertainty results then analyzed. Results show that domestic production primary source China, most which flowed market form final products, remainder exported international markets; soil water main sinks from usage stage contributing largest portion (103 tons 2019). The number inflows outflows relatively low before 2000, but gradually increased until 2009 when relevant convention issued. Since 2005, in-use stocks have grown yearly. addition, landfill been climbing since 1985. End-of-life management still dominated by traditional methods, such incineration, while there trend towards green treatments. This study basic data theoretical support China.