Dietary intake can be an important exposure route to per- and polyfluoroalkyl substances (PFASs). Little is known about the bioaccumulation of emerging per- and polyfluoroalkyl ether acids (PFEAs) in garden produce from PFAS-impacted communities and the associated dietary exposure risk. In this study, 53 produce samples were collected from five residential gardens near a fluorochemical manufacturer. Summed PFAS concentrations ranged from 0.0026 to 38 ng/g wet weight of produce, and water-rich produce exhibited the highest PFAS levels. The PFAS signature was dominated by PFEAs, and hexafluoropropylene oxide-dimer acid (commonly known as GenX) was detected in 72% of samples. Based on average measured GenX concentrations, chronic-exposure daily limits were as low as 289 g produce/day for children (3–6 yr). This analysis does not consider other PFEAs that were present at higher concentrations, but for which reference doses were not available. This study revealed that consuming residential garden produce grown in PFAS-impacted communities can be an important exposure pathway.

中文翻译：

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在北卡罗来纳州的一家氟化学制造商附近收获的住宅园艺产品可能是一种重要的氟醚暴露途径


膳食摄入可能是全氟烷基和多氟烷基物质 （PFAS） 的重要暴露途径。对于受 PFAS 影响社区的园艺产品中新兴的全氟烷基醚酸 （PFEA） 的生物积累以及相关的膳食暴露风险，我们知之甚少。在这项研究中，从一家氟化学制造商附近的五个住宅花园收集了 53 个农产品样本。农产品的 PFAS 总浓度范围为 0.0026 至 38 ng/g 湿重，富含水的农产品表现出最高的 PFAS 水平。PFAS 特征以 PFEA 为主，在 72% 的样品中检测到六氟环氧丙烷-二聚酸（通常称为 GenX）。根据平均测量的 GenX 浓度，儿童（3-6 岁）的慢性暴露每日限量低至 289 克农产品/天。该分析不考虑其他浓度较高但无法获得参考剂量的 PFEA。这项研究表明，食用受 PFAS 影响的社区种植的住宅花园农产品可能是一个重要的暴露途径。