Application of VUV/Sulfite Defluorination System for the Simple Detection of Perfluoroalkyl Substances DOI Creative Commons
Shiyong Tao, Yilin Chen, Mei Xiao

и другие.

Molecules, Год журнала: 2025, Номер 30(11), С. 2475 - 2475

Опубликована: Июнь 5, 2025

This study investigated the defluorination of PFOA and PFOS using a vacuum ultraviolet (VUV)/sulfite system, evaluated its potential application in quantifying individual perfluoroalkyl substances (PFAS). Results showed that 81.9% 87.5% were achieved after 120 min photoreaction under conditions pH 12 20 mM sulfite. Higher sulfite dosage facilitated reaction, while competing ions could suppress efficiency. Based on optimized for PFAS, fluoride release amount, as an indirect quantification indicator, was further assessed. A strong linearity between initial PFAS concentration (R2 > 0.999) observed range 2–100 μM, such also shown presence sediment leachates. correlation enabled estimation concentrations by measuring treatment. The approach demonstrated adsorption experiment, where calculated distribution coefficients (Koc) PFAS–sediment interactions consistent with previously reported values, supporting analytical validity method controlled conditions. Overall, this work presents simple cost-effective strategy applying VUV/sulfite system quantitative detection complex environmental matrices.

Язык: Английский

Application of VUV/Sulfite Defluorination System for the Simple Detection of Perfluoroalkyl Substances DOI Creative Commons
Shiyong Tao, Yilin Chen, Mei Xiao

и другие.

Molecules, Год журнала: 2025, Номер 30(11), С. 2475 - 2475

Опубликована: Июнь 5, 2025

This study investigated the defluorination of PFOA and PFOS using a vacuum ultraviolet (VUV)/sulfite system, evaluated its potential application in quantifying individual perfluoroalkyl substances (PFAS). Results showed that 81.9% 87.5% were achieved after 120 min photoreaction under conditions pH 12 20 mM sulfite. Higher sulfite dosage facilitated reaction, while competing ions could suppress efficiency. Based on optimized for PFAS, fluoride release amount, as an indirect quantification indicator, was further assessed. A strong linearity between initial PFAS concentration (R2 > 0.999) observed range 2–100 μM, such also shown presence sediment leachates. correlation enabled estimation concentrations by measuring treatment. The approach demonstrated adsorption experiment, where calculated distribution coefficients (Koc) PFAS–sediment interactions consistent with previously reported values, supporting analytical validity method controlled conditions. Overall, this work presents simple cost-effective strategy applying VUV/sulfite system quantitative detection complex environmental matrices.

Язык: Английский

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