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Biomimetic degradation characteristics of linear perfluorohexanesulfonate (L-PFHxS)
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Ling-xin CHEN1, Zhi-min YANG2, Shu-po LIU1, Zhen-ming ZHOU1, Fei LI1, *
China Environmental Science | 2025, 45(8) : 4620 - 4627
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China Environmental Science | 2025, 45(8): 4620-4627
• Emerging Contaminants and Toxicology •
Biomimetic degradation characteristics of linear perfluorohexanesulfonate (L-PFHxS)
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Ling-xin CHEN1, Zhi-min YANG2, Shu-po LIU1, Zhen-ming ZHOU1, Fei LI1, *
Affiliations
  • 1.Collge of Civil Engineering, Huaqiao University, Xiamen 361021, China
  • 2.Analytical and Testing Center of Huaqiao University, Xiamen 361021, China
Published: 2025-08-20
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Based on confirming that the linear perfluorohexanesulfonate (L-PFHxS) could be degraded and defluorinated in a biomimetic system, the degradation products of isotope-labelled (13C) L-PFHxS (MPFHxS) were qualitatively analyzed, and the degradation mechanisms of L-PFHxS were then clarified. Two 13C-labeled perfluorocarboxylates (PFCAs, i.e. 13C3-perfluorohexanoate and 13C3-perfluorononanoate), eight native PFCAs (perfluorocarbon chain length ranged from C1 to C8), and seven native perfluoroalkylsulfonates (PFSAs, perfluorocarbon chain length ranging from C3 to C8, including linear and branched PFHxS), had been identified as the biomimetic degradation products of MPFHxS. The degradation pathways of L-PFHxS were proposed as follows: L-PFHxS were firstly reduced to C6F13· radical by cleavage of C-S bond, and then transformed to perfluorohexanoate through a series of hydrolysis. C6F13· radical or/and L-PFHxS were further reduced to form CnF2n+1· (n = 1, 2or 3) radicals, and these radicals were chain-lengthened by stepwise addition of 0 ~ 2C3F6 moieties and eventually transformed to various degradation products with different perfluorocarbon chain length via a series of hydrolysis (PFCAs) or combination reaction with sulfonyl hydroxide radical (PFSAs).

L-PFHxS  /  biomimetic degradation  /  degradation products  /  degradation pathways
陈铃心, 杨志敏, 刘淑坡, 周真明, 李飞. 直链全氟己磺酸（L-PFHxS）仿生降解特性. 中国环境科学, 2025 , 45 (8) : 4620 -4627 .
Ling-xin CHEN, Zhi-min YANG, Shu-po LIU, Zhen-ming ZHOU, Fei LI. Biomimetic degradation characteristics of linear perfluorohexanesulfonate (L-PFHxS)[J]. China Environmental Science, 2025 , 45 (8) : 4620 -4627 .
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Year 2025 volume 45 Issue 8
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Article Info
  • Receive Date：2025-01-03
  • Online Date：2026-10-08
  • Published：2025-08-20
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  • Received：2025-01-03
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Affiliations
    1.Collge of Civil Engineering, Huaqiao University, Xiamen 361021, China
    2.Analytical and Testing Center of Huaqiao University, Xiamen 361021, China
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表12种不同金属材料的力学参数
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Number of
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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