Fecal Excretion of Perfluoroalkyl and Polyfluoroalkyl Substances in Pets from New York State, United States,Environmental Science & Technology Letters

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Fecal Excretion of Perfluoroalkyl and Polyfluoroalkyl Substances in Pets from New York State, United States
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2020-02-05 , DOI: 10.1021/acs.estlett.9b00786
Jing Ma _{1,

2} , Hongkai Zhu ₁ , Kurunthachalam Kannan _{1,

3}

Affiliation

Human exposure to per- and polyfluoroalkyl substances (PFASs) continues to be a concern. Little is known about their toxicokinetics, particularly with regard to fecal excretion of PFASs. Because pets are sentinels of human exposure to environmental contaminants, analysis of PFASs in pet feces can provide information about rates of excretion of these chemicals. In this study, 15 PFASs were measured in cat and dog feces collected from the Albany area of New York State. All PFASs except perfluorodecanesulfonate and perfluoroheptanoic acid were found in cat and dog feces. The sum concentrations of 13 PFASs (∑PFAS) varied between 21.6 and 474 (mean: 85.4 ± 94.5) ng/g dry weight for dogs, which were slightly higher than those found for cats (range: 18.0–165 ng/g dry weight, mean: 54.7 ± 26.9 ng/g dry weight). Long-chain perfluorocarboxylic acids with 9–12 carbons (perfluorononanoic acid, perfluorodecanoic acid, perfluoroundecanoic acid, and perfluorododecanoic acid) were predominant in pet feces. Perfluorooctanesulfonate and its precursors were found at low concentrations. Fecal excretion rates of PFASs in cats and dogs were found to be similar. The estimated daily fecal excretion suggested that both dogs and cats are exposed to some PFASs at doses above the provisional minimum risk level recommended for humans.

中文翻译：

美国纽约州宠物粪便中全氟烷基和多氟烷基物质的排泄

人体暴露于全氟烷基物质和多氟烷基物质（PFAS）仍然是一个问题。人们对其毒物动力学知之甚少，特别是在PFASs的粪便排泄方面。由于宠物是人类暴露于环境污染物的前哨动物，因此对宠物粪便中的PFAS进行分析可以提供有关这些化学物质排泄速率的信息。在这项研究中，从纽约州奥尔巴尼地区收集的猫和狗粪便中测定了15种全氟辛烷磺酸。在猫和狗的粪便中发现了除全氟癸烷磺酸盐和全氟庚酸外的所有PFAS。狗的13种全氟辛烷磺酸（∑PFAS）的总浓度在21.6至474之间（平均：85.4±94.5）ng / g干重，略高于猫的干重（范围：18.0–165 ng / g干重），平均值：54.7±26.9 ng / g干重）。宠物粪便中主要含有9-12个碳原子的长链全氟羧酸（全氟壬酸，全氟癸酸，全氟十一酸和全氟十二酸）。发现全氟辛烷磺酸及其前体的浓度低。发现猫和狗中PFAS的粪便排泄率相似。估计的每日粪便排泄量表明，猫和狗都暴露于某些PFAS中，剂量超过建议的人类临时最低风险水平。

更新日期：2020-02-06

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