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Phytotoxicity, uptake and transformation of nano-CeO2 in sand cultured romaine lettuce
Zhang, P; Ma, YH; Liu, ST; Wang, GH; Zhang, JZ; He, X; Zhang, J; Rui, YK; Zhang, ZY; Zhang J(张静)
2017
Source PublicationENVIRONMENTAL POLLUTION
ISSN0269-7491
EISSN1873-6424
Volume220Pages:1400-1408
SubtypeArticle
AbstractToxicity and uptake of nano-CeO2 (nCeO(2)) in edible vegetables are not yet fully understood. In the present study, we grew romaine lettuce in sand amended with nCeO(2). At high concentrations (1000 and 2000 mg/kg), nCeO(2) diminished the chlorophyll content by 16.5% and 25.8%, respectively, and significantly inhibited the biomass production. nCeO(2) (>= 100 mg/kg) altered antioxidant enzymatic activities and malondialdehyde levels in the plants. nCeO(2) (>= 500 mg/kg) triggered a remarkable increase of nitrate-N level in the shoots, which can be converted to toxic nitrite in humans thereby posed risk to human health. Concentration dependent accumulation of Ce in the plant tissues was observed. X ray absorption near edge spectroscopy (XANES) results indicate that Ce presented as nCeO(2) and CePO4 in the roots while as nCeO(2) and Ce carboxylates in the shoots. Chelation of ce(3+) by citric acid or precipitation of ce(3+) by PO43- reduced the translocation and toxicity of nCeO(2), indicating that release of Ce3+ played a critical role in the toxicity nCeO(2). (C) 2016 Elsevier Ltd. All rights reserved .
KeywordCeO2 Nanomaterials Lettuce Toxicity Transformation
DOI10.1016/j.envpol.2016.10.094
WOS KeywordCERIUM OXIDE NANOPARTICLES ; CUCUMBER CUCUMIS-SATIVUS ; CEO2 NANOPARTICLES ; ENGINEERED NANOMATERIALS ; ZNO NANOPARTICLES ; TROPHIC TRANSFER ; DIETARY NITRATE ; PLANT-TISSUE ; FOOD SAFETY ; LIFE-CYCLE
Indexed BySCI ; EI ; PUBMED ; MEDLINE ; SCOPUS
Language英语
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000390732300069
EI Accession Number20165003109589
EI KeywordsCarboxylation - Cerium - Cerium oxide - Health risks - Nanostructured materials - Toxicity - X ray absorption
EI Classification Number461.7 Health Care - 547.2 Rare Earth Metals - 711 Electromagnetic Waves - 761 Nanotechnology - 802.2 Chemical Reactions
MedlineIDMEDLINE:27843018
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Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/285120
Collection多学科研究中心
实验物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Zhang, P,Ma, YH,Liu, ST,et al. Phytotoxicity, uptake and transformation of nano-CeO2 in sand cultured romaine lettuce[J]. ENVIRONMENTAL POLLUTION,2017,220:1400-1408.
APA Zhang, P.,Ma, YH.,Liu, ST.,Wang, GH.,Zhang, JZ.,...&张静.(2017).Phytotoxicity, uptake and transformation of nano-CeO2 in sand cultured romaine lettuce.ENVIRONMENTAL POLLUTION,220,1400-1408.
MLA Zhang, P,et al."Phytotoxicity, uptake and transformation of nano-CeO2 in sand cultured romaine lettuce".ENVIRONMENTAL POLLUTION 220(2017):1400-1408.
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