Professor Kenneth Leung Mei-yee, as a co-author, published a study revealing a correlation between global contamination of per- and polyfluoroalkyl substances (PFAS) in globally consumed edible marine fish and associated human health risks. The findings were recently published in the international journal “Science”, under the title “Risks of Per- and Polyfluoroalkyl Substance Exposure through Marine Fish Consumption”. The results show that global fish trade can shift exposure risks when people consume imported fish with elevated levels of PFAS compounds.

Professor Leung and his research team at CityUHK, including Professor Ruan Yuefei, Assistant Professor in the Department of Chemistry, and Dr Qi Wang, postdoctoral fellow, also conducted tests on PFAS contamination in local fish species commonly caught in Hong Kong waters. The results indicate that while overall PFAS exposure risks from local fish remained low in Hong Kong, several species, including Blackspot threadfin, Daggertooth pike conger, Indian thryssa and Burrowing goby were found to contain relatively high PFAS concentrations.

梁美儀教授聯同國際研究團隊發表研究，揭示全球可食用海魚中全氟和多氟烷基物質（PFAS）的污染濃度與人類健康風險的相聯性。有關研究成果最近於國際學術期刊《科學》上發表，題為「通過食用海洋魚類導致的全氟和多氟烷基物質暴露風險」。發現高污染風險魚種可透過貿易流入其他市場，令食安風險「跨境轉移」。

此外，梁教授與其研究團隊，包括化學系助理教授阮悦斐教授與博士後研究員王琪博士，早前亦針對本地魚類的PFAS污染情況，為多種在香港水域所捕捉的魚類進行檢測。顯示本地的PFAS攝入風險不高，惟個別魚種，包括六指馬鮁、青門鱔、黃姑及紅壇魚等PFAS濃度偏高。

Details in Bio (https://www.cityu.edu.hk/media/news/2025/12/29/see-food-safety-risk)