Fluorinated surfactants and fluorinated functional materials were introduced. Their fundamental concept, classification and structure, major physicochemical properties, industrial production methods, as well as applic...Fluorinated surfactants and fluorinated functional materials were introduced. Their fundamental concept, classification and structure, major physicochemical properties, industrial production methods, as well as applications in industrial and high technological fields were summarized. Their current environmental problems and the countermeasures in this field were also briefed.展开更多
The environmental and safety issues of perfluorooctane sulfonyl fluoride/perfluorooctane sulfonic acid/ perfluorooctane sulfonates (PFOS) were introduced in detail by summarizing several published reviews, including t...The environmental and safety issues of perfluorooctane sulfonyl fluoride/perfluorooctane sulfonic acid/ perfluorooctane sulfonates (PFOS) were introduced in detail by summarizing several published reviews, including their production, occurrence and emission in environment, exposure and intake to human being, supervision and emission reduction, long-distance transport, bioaccumulation and excretion, degradation and toxicity. Opinion with respect to safety issues of PFOS was also proposed in view of surfactant working field in order to upgrade their application value. The overreaction in the current state for the fear of “fluorine” was concerned. For fire-fighting foams, the issue of “safety” needs to be critically weighed.展开更多
Fluorinated alkyl substances are irreplaceable in many fields because of the special properties of fluorocarbon chains.Many efforts have been made to solve the historic problems of PFOS.In this paper,several strategie...Fluorinated alkyl substances are irreplaceable in many fields because of the special properties of fluorocarbon chains.Many efforts have been made to solve the historic problems of PFOS.In this paper,several strategies were discussed,including the possibilities in the methods of degradation,separation,recycling use,and reducing the using concentration.The most reliable one is to obtain replacement products of PFOS.Several kinds of replacement products were introduced and their feasibility of application was also discussed.展开更多
As surfactant researchers, we have discussed the current problems of PFOS in China from our personal standpoint. The difficulties in both elimination and investigation on PFOS are analyzed. The production, application...As surfactant researchers, we have discussed the current problems of PFOS in China from our personal standpoint. The difficulties in both elimination and investigation on PFOS are analyzed. The production, application, biodegradation and regulation for some other important fluorinated alkylated substances are also briefly introduced. Finally, the objective and tasks for surfactant researchers are pointed out.展开更多
文摘Fluorinated surfactants and fluorinated functional materials were introduced. Their fundamental concept, classification and structure, major physicochemical properties, industrial production methods, as well as applications in industrial and high technological fields were summarized. Their current environmental problems and the countermeasures in this field were also briefed.
文摘The environmental and safety issues of perfluorooctane sulfonyl fluoride/perfluorooctane sulfonic acid/ perfluorooctane sulfonates (PFOS) were introduced in detail by summarizing several published reviews, including their production, occurrence and emission in environment, exposure and intake to human being, supervision and emission reduction, long-distance transport, bioaccumulation and excretion, degradation and toxicity. Opinion with respect to safety issues of PFOS was also proposed in view of surfactant working field in order to upgrade their application value. The overreaction in the current state for the fear of “fluorine” was concerned. For fire-fighting foams, the issue of “safety” needs to be critically weighed.
文摘Fluorinated alkyl substances are irreplaceable in many fields because of the special properties of fluorocarbon chains.Many efforts have been made to solve the historic problems of PFOS.In this paper,several strategies were discussed,including the possibilities in the methods of degradation,separation,recycling use,and reducing the using concentration.The most reliable one is to obtain replacement products of PFOS.Several kinds of replacement products were introduced and their feasibility of application was also discussed.
文摘As surfactant researchers, we have discussed the current problems of PFOS in China from our personal standpoint. The difficulties in both elimination and investigation on PFOS are analyzed. The production, application, biodegradation and regulation for some other important fluorinated alkylated substances are also briefly introduced. Finally, the objective and tasks for surfactant researchers are pointed out.
