三氟乙酸(TFA)

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现在的雨水不一样了,该为此担忧吗?
Hu Xiu· 2025-09-20 09:38
TFA形成累积的一部分原因是,其碳-氟键非常强大,无法被自然破坏。根据某些定义,TFA是全氟及多氟烷基物质(PFAS)中极小之例,此类物质因能 存在极长时间而不分解,被科学家称为"永久性化学品(forever chemicals)"(见下图:"TFA:引发争议的分子"和"日益上升的TFA含量")。 只要天降雨雪,就有一种名为三氟乙酸(TFA)的人造化学物质随之降下。纵观全球,从湖泊到河流,从瓶装水到啤酒,从谷物庄稼到动物肝脏,甚至是 人类血液和尿液中,都出现了TFA的踪影[1]。而且,无论研究人员在哪里检测TFA含量的变化,都发现其浓度在增加。 过去40年间,德国多种树种的叶片和针叶中,TFA含量增长了5~10倍[2,3]。不仅如此,据研究人员记录,TFA在加拿大北极冰芯[4]和丹麦地下水[5]中的含 量也在上升。 人造化学物质"三氟乙酸"(TFA)在雨水中的含量日渐上升。来源:Ali Majdfar/Getty 部分PFAS已确认会加剧健康风险,并在国际上被禁用。许多国家还对特定的PFAS在饮用水中的含量做了限制,并斥巨资采取措施,清除此类物质。 但是,TFA对健康的影响并不如PFAS明确。在这方面,目前只 ...
两大化工巨头,再关停、出售
DT新材料· 2025-09-19 16:04
Group 1: Solvay's Strategic Changes - Solvay will terminate the production of selected product lines at its Bad Wimpfen plant, specifically stopping the production of trifluoroacetic acid (TFA) and related organic compounds by early 2026, which will result in a reduction of approximately 100 jobs [1][2] - The Bad Wimpfen plant will see new investments aimed at establishing a state-of-the-art NocolokⓇ paste and coating facility, consolidating its position as a global innovation and customer application center in automotive brazing [2] - Solvay plans to allocate around €250 million for restructuring and strategic investments around 2026, reaffirming Germany's importance as an industrial base [3] Group 2: SK Group's Divestment and Strategic Focus - SK Group is selling its entire 35% stake in the Sinopec-SK (Wuhan) Petrochemical Company for approximately 819.3 billion KRW (around 4.17 billion RMB), as the joint venture has accumulated losses exceeding 1 trillion KRW due to oversupply and intensified price competition in the Chinese ethylene market [4][5] - The joint venture, established in 2013 with a total investment of 3.3 trillion KRW, was once a symbol of SK's localization strategy in China, producing 3.2 million tons of general chemicals annually [4] - SK Group is accelerating its restructuring efforts to raise new funds, including plans to divest its overseas businesses, which were acquired for a total of approximately $600 million [5] - The company is shifting its focus towards the "ABC" strategy, concentrating on artificial intelligence, batteries, and chips, with a commitment to invest 8.2 trillion KRW in these growth areas by 2030 [6]