A first global emission inventory of C₄–C₁₀ perfluoroalkanesulfonic acids (PFSAs) released during the life cycle of perfluorohexanesulfonyl fluoride (PHxSF)- and perfluorodecanesulfonyl fluoride (PDSF)-based products is presented. This study complements previous research on emissions of PFSAs that focused largely on the life cycle of perfluorooctanesulfonyl fluoride (POSF) and its derivatives. It reviews and integrates existing information about the life cycle of PHxSF, PDSF, and their derivatives; the limited data available in the public domain point to potentially significant global production, uses, and releases of these substances. Between 1958 and 2015, ranges of total emissions of perfluorohexanesulfonic acid (PFHxS) and perfluorodecanesulfonic acid (PFDS) are estimated to be 120–1022 and 38–378 metric tons, respectively. With the new emission estimates as inputs in a global multimedia environmental fate model (CliMoChem), the model-derived environmental concentrations well capture the reported field concentrations, providing strong support for the plausibility of the developed emission inventories. The results highlight the ongoing environmental exposure to these substances and the need for more detailed data in the public domain about their production levels and uses.

中文翻译：

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建立C ₄ -C ₁₀全氟烷磺酸和相关前体的全球排放总量清单：关注基于C ₆和C ₁₀的产品的生命周期

第一份全球排放清单C ₄ –C ₁₀介绍了在基于全氟己烷磺酰氟（PHxSF）和全氟癸烷磺酰氟（PDSF）的产品生命周期中释放的全氟烷磺酸（PFSA）。这项研究是对先前关于PFSA排放的研究的补充，该研究主要关注全氟辛烷磺酰氟（POSF）及其衍生物的生命周期。它审查并整合了有关PHxSF，PDSF及其衍生物的生命周期的现有信息；公共领域中可用的有限数据表明，这些物质可能在全球范围内大量生产，使用和释放。在1958年至2015年之间，全氟己烷磺酸（PFHxS）和全氟癸烷磺酸（PFDS）的总排放量估计分别为120–1022和38–378公吨。通过将新的排放估算值作为全球多媒体环境归宿模型（CliMoChem）的输入，该模型得出的环境浓度很好地捕获了所报告的田间浓度，为已开发的排放清单的合理性提供了有力的支持。结果强调了这些物质对环境的持续暴露，以及在公共领域中需要有关其生产水平和用途的更详细数据的需求。