2014年9月1日 · Emissions from PFOA-, PFNA-, POSF- and fluorotelomer-based products are quantified. The relative contribution of each source is homologue- and time-dependent. The majority of industrial PFCA sources are now based in Asia, especially China.

2020年5月5日 · Here, lettuce exposed to either perfluorooctanoic acid (PFOA) or perfluorooctane sulfonate (PFOS) at two different concentrations (500, 5000 ng/L) in hydroponic media was investigated via metabolomics. Under the tested conditions, the growth and biomass of lettuce were not affected by PFOA and PFOS, but metabolic profiles in leaves were altered.

pfoa 常用於生產高效能氟聚合物如鐵弗龍等之加工助劑。 而氟調聚化學法製品中亦可能含有 PFOA，其至日常用品像披薩盒與微波爆玉米花袋子等各種防油紙袋也曾發現含有 PFOA。

2023年3月23日 · The best studied PFAS are carboxylic and sulfonic acids with chain lengths of C4 to C14, particularly perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS). These substances are harmful to aquatic fauna, insects, and amphibians at concentrations of a few µg/L or less, accumulate in organisms, and biomagnify in food webs.

We quantify global emissions of C4-C14 perfluoroalkyl carboxylic acid (PFCA) homologues during the life-cycle of products based on perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorooctane sulfonyl fluoride (POSF), and fluorotelomer compounds.

2021年10月1日 · We investigated the effectiveness of PFOA degradation by ferrous iron-activated persulfate oxidation (IAPO) under various aqueous geochemical conditions. Approximately 64% of PFOA (initial concentration = 1.64 μmol L −1) was degraded after 4 h under illuminated anoxic conditions at ambient temperature. This degradation rate and magnitude ...

2022年8月30日 · Its hard enough to figure out how to avoid PFAS chemicals but the heck are C8, C6 and C4? PFAS, which stands for per-and polyfluoroalkyl substances, are over 6 thousand manmade chemicals made of carbon chains (typically 2 to 16 carbon atoms in length) bonded to fluorine (F) atoms C8 refer to long

VOF 产物在低温 （< 500 °C） 下为长链（氢）氟烃 （C4-C7），在高温下 （> 600 °C） 变为短链 （C1-C4）。 PFOA 转化包括脱羧、VOF 解吸、进一步的有机氟分解和含 PFOA 的 GAC 的斜坡加热中的矿化。 脱羧在 120 °C 时开始，但其他过程需要更高的温度 （>200 °C）。 这些结果提供了有关含 PFAS 的 GAC 热再生以及使用加力燃烧室或热氧化器进一步控制 VOF 的宝贵信息。 Thermal treatment is effective for the removal of perfluorooctanoic acid (PFOA).

在雌性Sprague-Dawley大鼠中，PFOA引起子宫腺癌，胰腺腺泡细胞腺瘤或腺癌（合并）的发病率呈统计学显著的阳性趋势。 关于机制证据，PFOA诱导表观遗传学改变。在暴露的人类中，许多研究表明，母亲的血清PFOA与其子女的基因特异性DNA甲基化之间存在关联。

We quantify global emissions of C4-C14 perfluoroalkyl carboxylic acid (PFCA) homologues during the life-cycle of products based on perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorooctane sulfonyl fluoride (POSF), and fluorotelomer compounds.