Speaker: Dr Chen Huiting
Date: 27 October 2017
Venue: E2S2-CREATE meeting room, Level 15, Create Tower
Per- and polyfluoroalkyl substances (PFASs), as a special group of emerging contaminants (ECs), have attracted increasing attention over the past decades. A tremendous amount of information gathered on the occurrence, fate and toxicological effects of PFASs has led to various regulatory actions. Most of these actions and research studies focused on a limited selection of rather well-known long-chain PFASs, specifically perfluorooctanesulfonate (PFOS) and perfluorooctanoic acid (PFOA). However, there are probably at least 3000 PFASs currently on the global market. Overlooking the vast majority of other PFASs including the recent alternative PFASs, such as perfluorobutanoic acid (PFBA) and perflurobutanesulfonate (PFBS), is a current major concern. The special properties (i.e. high persistence and high solubility), the large number of PFASs, and the lack of effective control measures have made PFASs an intractable, potentially never-ending management issue. Therefore, integrated investigation approaches are highly recommended. Our group has made great effort in developing these approaches which include comprehensive experiments to fill in data gaps (environmental levels, sorption properties, toxicological effects), use of multimedia fate models, and risk assessment. Such integrated approaches can be applied to PFASs, their new alternatives and other contaminants of emerging concern.