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Trophic Transfer and Transformation of CeO2 Nanoparticles along a Terrestrial Food. Chain: Influence of Exposure Routes
Ma YH(马宇辉); Yao Y(姚瑶); Yang J(杨洁); He X(何潇); Ding YY(丁雅韵); 张鹏(多); Zhang JZ(张珺哲); Wang GH(王国华); Xie CJ(谢昌健); Luo WH(罗文赫); Zhang J(张静); Zheng LR(郑黎荣); Chai ZF(柴之芳); Zhao YL(赵宇亮); Zhang ZY(张智勇); Ma, YH; Yao, Y; Yang, J; He, X; Ding, YY; Zhang, P; Zhang, JZ; Wang, GH; Xie, CJ; Luo, WH; Zhang, J; Zheng, LR; Chai, ZF; Zhao, YL; Zhang, ZY
2018
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
EISSN1520-5851
Volume52Issue:14Pages:7921-7927
SubtypeArticle
AbstractThe trophic transfer and transformation of CeO2 nanoparticles (NPs) through a simulated terrestrial food chain were investigated using a radiotracer technique and X-ray absorption near edge structure (XANES). Radioactive (CeO2)-Ce-141 NPs were applied to head lettuce (Lactuca sativa), treated via root exposure in its potting soil (5.5 or 11 mg/plant) for 30 days or foliar exposure (7.2 mg/plant, with half of the leaves treated and the other half not) for 7 days. Subsequently, two groups of land snails (Achatina fulica) were exposed to Ce-141 via either a direct (i.e., feeding on the lettuce leaves with Ce-141-contaminated surfaces) or an indirect/trophic (i.e., feeding on the lettuce leaves with systemically distributed Ce-141) route. To evaluate the influence of exposure routes, the Ce contents of the lettuce, snail tissues, and feces were determined by radioactivity measurements. The results show that both assimilation efficiencies (AEs) and food ingestion rates of Ce are greater for the trophic (indirect) exposure. The low AEs indicate that the CeO2 NPs ingested by snails were mostly excreted subsequently, and those that remained in the body were mainly concentrated in the digestive gland. XANES analysis shows that >85% of Ce was reduced to Ce(III) in the digestive gland under direct exposure, whereas Ce in the rest of the food chain (including feces) was largely in its original oxidized (IV) state. This study suggests that CeO2 NPs present in the environment may be taken up by producers and transferred to consumers along food chains and trophic transfer may affect food safety.
DOI10.1021/acs.est.8b00596
WOS KeywordCERIUM OXIDE NANOPARTICLES ; SOYBEAN GLYCINE-MAX ; CUCUMBER PLANTS ; PARTICLE-SIZE ; ENGINEERED NANOMATERIALS ; SILVER NANOPARTICLES ; ORGANIC-MATTER ; DIETARY UPTAKE ; BIOACCUMULATION ; BIOTRANSFORMATION
Indexed BySCI ; ADS ; EI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000439397800038
EI Accession Number20182705399688
ADS Bibcode2018EnST...52.7921M
ADS URLhttps://ui.adsabs.harvard.edu/abs/2018EnST...52.7921M
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2018EnST...52.7921M/citations
Citation statistics
Cited Times:10 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/286133
Collection多学科研究中心
实验物理中心
Corresponding AuthorZhang ZY(张智勇)
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Corresponding Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Ma YH,Yao Y,Yang J,et al. Trophic Transfer and Transformation of CeO2 Nanoparticles along a Terrestrial Food. Chain: Influence of Exposure Routes[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2018,52(14):7921-7927.
APA 马宇辉.,姚瑶.,杨洁.,何潇.,丁雅韵.,...&Zhang, ZY.(2018).Trophic Transfer and Transformation of CeO2 Nanoparticles along a Terrestrial Food. Chain: Influence of Exposure Routes.ENVIRONMENTAL SCIENCE & TECHNOLOGY,52(14),7921-7927.
MLA 马宇辉,et al."Trophic Transfer and Transformation of CeO2 Nanoparticles along a Terrestrial Food. Chain: Influence of Exposure Routes".ENVIRONMENTAL SCIENCE & TECHNOLOGY 52.14(2018):7921-7927.
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