Negligible effects of TiO2 nanoparticles at environmentally relevant concentrations on the translocation and accumulation of perfluorooctanoic acid and perfluorooctanesulfonate in hydroponically grown pumpkin seedlings (Cucurbita maxima x C. moschata)
文献类型：期刊论文
| 作者 | Xu, Zhenlan; Tang, Tao; Cheng, Haixiang2; Bao, Qibei3; Yu, Jianzhong; Zhang, Changpeng; Wu, Tingting2; Zhao, Xueping; Schramm, Karl-Werner; Wang, Yawei1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-10-10 |
| 卷号 | 686页码:171-178 |
| 关键词 | TiO2 nanoparticles Pumpkin seedling Perfluoroalkyl substances Uptake Accumulation |
| ISSN号 | 0048-9697 |
| 英文摘要 | Titanium dioxide nanopartides (TiO2-NPs) are widely distributed in the environment. It has been demonstrated that TiO2-NPs could modify the environmental fate and bioavailability of organic pollutants, which affects ecological risks of TiO2-NPs and organic pollutants. In this study, the uptake, translocation and accumulation of perfluorooctanoic acid (PFOA) and perfluorooclanesulfonate (PFOS) in pumpkin plants was investigated in the presence of TiO2-NPs. We reported for the first lime the negligible effects of TiO2-NPs al environmentally relevant concentrations (0.05-5 mg/L) on the uptake and accumulation of PFOA and PFOS in hydroponically grown pumpkin seedlings regardless of root, stem and leaf. This phenomenon was independent of the initial concentrations of PFOA/PFOS and TiO2-NPs in the exposure solution. Also, seedling mass and contents of chlorophyll and anthocyanin were not affected by the co-exposure. Adsorption tests demonstrated the negligible adsorption of PFOA/PFOS on TiO2-NPs in the exposure solution. Moreover, uptake of PFOA/PFOS was insensitive to aquaporin inhibitor AgNO3 but significantly inhibited by niflumic acid (anion channel blocker) and 2,4-d initrophenol (metabolic inhibitor) whereas Ti concentration in root was not affected by niflumic acid and 2,4-din itrophenol but significantly decreased by AgNO3, indicating that transport of PFOA/PFOS and TiO2-NPs were via different routes into the pumpkin seedling. It was proposed that different pathways by which TiO2-NPs and PFOA/PFOS transported into the pumpkin seedling and negligible adsorption of PFOA/PFOS on TiO2-NPs contributed to the negligible effects of TiO2-NPs on the uptake, translocation and accumulation of PFOA/PFOS in pumpkin seedlings. In total, this work would improve our understanding of the ecological risks of TiO2-NPs in the environment. (C) 2019 Published by Elsevier B.V. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/42564]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Tech Univ Munich, Wissensch Zentrum Weihenstephan Ernahrung & Landn, Dept Biowissensch, Weihenstephaner Steig 23, D-85350 Freising Weihenstephan, Germany 2.Zhejiang Acad Agr Sci, State Key Lab Qual & Safety Agroprod Prepared, Key Lab Pesticide Residue Detect, Minist Agr,Inst Qual & Stand Agroprod, Hangzhou 310021, Zhejiang, Peoples R China 3.Quzhou Univ, Coll Chem & Mat Engn, Dept Environm Engn, Quzhou 324000, Peoples R China 4.Ningbo Coll Hlth Sci, Ningbo 315100, Zhejiang, Peoples R China 5.Helmholtz Ctr Munich, Natl Res Ctr Environm Hlth GmbH, Mol EXposom MEX, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany 6.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Zhenlan,Tang, Tao,Cheng, Haixiang,et al. Negligible effects of TiO2 nanoparticles at environmentally relevant concentrations on the translocation and accumulation of perfluorooctanoic acid and perfluorooctanesulfonate in hydroponically grown pumpkin seedlings (Cucurbita maxima x C. moschata)[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,686:171-178. |
| APA | Xu, Zhenlan.,Tang, Tao.,Cheng, Haixiang.,Bao, Qibei.,Yu, Jianzhong.,...&Wang, Yawei.(2019).Negligible effects of TiO2 nanoparticles at environmentally relevant concentrations on the translocation and accumulation of perfluorooctanoic acid and perfluorooctanesulfonate in hydroponically grown pumpkin seedlings (Cucurbita maxima x C. moschata).SCIENCE OF THE TOTAL ENVIRONMENT,686,171-178. |
| MLA | Xu, Zhenlan,et al."Negligible effects of TiO2 nanoparticles at environmentally relevant concentrations on the translocation and accumulation of perfluorooctanoic acid and perfluorooctanesulfonate in hydroponically grown pumpkin seedlings (Cucurbita maxima x C. moschata)".SCIENCE OF THE TOTAL ENVIRONMENT 686(2019):171-178. |
入库方式： OAI收割
来源：生态环境研究中心
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