Abstract
What is already known about this topic?Perfluoroalkyl substances (PFASs) are persistent organic pollutants, which have multi-organ toxicity and potential health risk to humans.What is added by this report?The most commonly detected PFASs in the Sixth China Total Diet Study (TDS) samples were perfluorooctanesulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluoroundecanoic acid (PFUdA), perfluorodecanoic acid (PFDA), perfluorononanoic acid (PFNA), and 9-chlorohexadecafluoro-3-oxanonane-1-sulfonate (6:2 Cl-PFESA). The mean estimated weekly intakes (EWIs) of PFOA, PFOS, and 6:2 Cl-PFESA in the Sixth TDS were 2.17, 2.72, and 2.75 ng/kg body weight per week, respectively.What are the implications for public health practice?The PFASs levels in some food category and dietary exposure still need to be continuously monitored, especially for 6:2 Cl-PFESA.
Highlights
Perfluoroalkyl substances (PFASs) are persistent organic pollutants, which are widely used in consumer and industrial products and can cause direct or indirect toxic effects on multiple organs [1–2]
Recent studies indicated that some alternatives may be more bio-accumulative or toxic than those legacy PFASs [3–4]
In order to investigate the latest dietary exposure of legacy and emerging contaminants for Chinese adults, composite food samples were collected from 24 provincial-level administrative divisions (PLADs) in the Sixth China Total Diet Study (TDS) during 2016–2019
Summary
Exposure to Emerging and Legacy Polyfluoroalkyl Substances in the Sixth Total Diet Study — China, 2016–2019. The most commonly detected PFASs in the Sixth China Total Diet Study (TDS) samples were perfluorooctanesulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluoroundecanoic acid (PFUdA), perfluorodecanoic acid (PFDA), perfluorononanoic acid (PFNA), and 9-chlorohexadecafluoro-3oxanonane-1-sulfonate (6:2 Cl-PFESA). The mean estimated weekly intakes (EWIs) of PFOA, PFOS, and 6:2 Cl-PFESA in the Sixth TDS were 2.17, 2.72, and 2.75 ng/kg body weight per week, respectively. In order to investigate the latest dietary exposure of legacy and emerging contaminants for Chinese adults, composite food samples were collected from 24 provincial-level administrative divisions (PLADs) in the Sixth China Total Diet Study (TDS) during 2016–2019. PFHxA, PFHpS, PFNS, PFDS, PFDoS, 8:2 Cl-PFESA, and ADONA were not found in all food samples (n=216). The summary of detection frequency (DF) and concentration of CCDC Weekly / Vol 4 / No 9
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