Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China
Per- and polyfluoroalkyl substances (PFASs) have captured worldwide attention due to their persistent and bioaccumulative characteristics. The bullfrog is a highly nutritious and edible aquatic product, but the PFAS accumulation characteristics of bullfrogs had not been paid attention. The present s...
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Frontiers Media S.A.
2021
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oai:doaj.org-article:af243dac22b54895bf13ad1c6188fc852021-11-30T23:33:39ZOccurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China2296-665X10.3389/fenvs.2021.786297https://doaj.org/article/af243dac22b54895bf13ad1c6188fc852021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenvs.2021.786297/fullhttps://doaj.org/toc/2296-665XPer- and polyfluoroalkyl substances (PFASs) have captured worldwide attention due to their persistent and bioaccumulative characteristics. The bullfrog is a highly nutritious and edible aquatic product, but the PFAS accumulation characteristics of bullfrogs had not been paid attention. The present study analyzed the PFAS concentrations in different tissues of cultured bullfrogs and relevant water and sediments collected from the aquaculture region in the coastal area of South China. Results showed that total PFAS concentrations were 50.26–364.25 ng/L in water, with a mean of 135.58 ng/L; concentrations in effluent water were significantly higher than those in influent water, which means bullfrog farming could increase contaminants into the surroundings. The total PFAS concentrations varied from 2.89 to 162.26 ng/g·dw in sediment. The distribution profile of PFASs in sediment was similar to that of water, with short chain playing a significant role. Total PFASs in bullfrog tissues were 3.36–84.07 ng/g·dw, with the highest values in the digestive system (intestines and stomach). As for one novel PFAS alternative, chlorinated polyfluorinated ether sulfonate (F-53B) was found at high detectable levels in all habitat samples and had a higher value of logarithmic bioaccumulation factors. The estimated dietary intake (EDI) for residents in the study area was generally higher than that in other regions; however, the hazard ratios (HRs) for most detected PFASs were far below the safety threshold value “1.” These results suggest that frequent consumption of these bullfrogs would basically not cause severe health effects on local residents in terms of PFASs.Qiongping SunYonglong XiongRan BiRan BiXinyi ZhanYueyao FanChuanghong SuZhenwei ChenZhao ZhengZhao ZhengJieyi DiaoTieyu WangFrontiers Media S.A.articlePFASsbullfrogtissue distributionbioaccumulationhealth riskEnvironmental sciencesGE1-350ENFrontiers in Environmental Science, Vol 9 (2021) |
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DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
PFASs bullfrog tissue distribution bioaccumulation health risk Environmental sciences GE1-350 |
| spellingShingle |
PFASs bullfrog tissue distribution bioaccumulation health risk Environmental sciences GE1-350 Qiongping Sun Yonglong Xiong Ran Bi Ran Bi Xinyi Zhan Yueyao Fan Chuanghong Su Zhenwei Chen Zhao Zheng Zhao Zheng Jieyi Diao Tieyu Wang Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China |
| description |
Per- and polyfluoroalkyl substances (PFASs) have captured worldwide attention due to their persistent and bioaccumulative characteristics. The bullfrog is a highly nutritious and edible aquatic product, but the PFAS accumulation characteristics of bullfrogs had not been paid attention. The present study analyzed the PFAS concentrations in different tissues of cultured bullfrogs and relevant water and sediments collected from the aquaculture region in the coastal area of South China. Results showed that total PFAS concentrations were 50.26–364.25 ng/L in water, with a mean of 135.58 ng/L; concentrations in effluent water were significantly higher than those in influent water, which means bullfrog farming could increase contaminants into the surroundings. The total PFAS concentrations varied from 2.89 to 162.26 ng/g·dw in sediment. The distribution profile of PFASs in sediment was similar to that of water, with short chain playing a significant role. Total PFASs in bullfrog tissues were 3.36–84.07 ng/g·dw, with the highest values in the digestive system (intestines and stomach). As for one novel PFAS alternative, chlorinated polyfluorinated ether sulfonate (F-53B) was found at high detectable levels in all habitat samples and had a higher value of logarithmic bioaccumulation factors. The estimated dietary intake (EDI) for residents in the study area was generally higher than that in other regions; however, the hazard ratios (HRs) for most detected PFASs were far below the safety threshold value “1.” These results suggest that frequent consumption of these bullfrogs would basically not cause severe health effects on local residents in terms of PFASs. |
| format |
article |
| author |
Qiongping Sun Yonglong Xiong Ran Bi Ran Bi Xinyi Zhan Yueyao Fan Chuanghong Su Zhenwei Chen Zhao Zheng Zhao Zheng Jieyi Diao Tieyu Wang |
| author_facet |
Qiongping Sun Yonglong Xiong Ran Bi Ran Bi Xinyi Zhan Yueyao Fan Chuanghong Su Zhenwei Chen Zhao Zheng Zhao Zheng Jieyi Diao Tieyu Wang |
| author_sort |
Qiongping Sun |
| title |
Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China |
| title_short |
Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China |
| title_full |
Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China |
| title_fullStr |
Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China |
| title_full_unstemmed |
Occurrence, Profile, and Potential Risks of Novel and Legacy Polyfluoroalkyl Substances in Bullfrogs: Pilot Study in an Intensive Aquaculture Region, China |
| title_sort |
occurrence, profile, and potential risks of novel and legacy polyfluoroalkyl substances in bullfrogs: pilot study in an intensive aquaculture region, china |
| publisher |
Frontiers Media S.A. |
| publishDate |
2021 |
| url |
https://doaj.org/article/af243dac22b54895bf13ad1c6188fc85 |
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