CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Spectral insights into the transformation and distribution of CdSe quantum dots in microorganisms during food-chain transport
Tian, LJ; Peng, Y; Chen, DL; Ma, JY; Yu, HQ; Li, WW
2017
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume7Issue:-Pages:-
Subtype期刊论文
AbstractThe discharge of engineered nanomaterials (ENMs) into environment is raising widespread concern not only due to their direction bio-toxicity but also their bio-concentration and bio-magnification through food web. However, the transformation and distribution of ENMs during food-chain transport are poorly understood, due to lack of accurate, reliable analytical methods. In this study, by using a suite of advanced spectrum techniques, we successfully tracked the distribution and biotransformation dynamics of CdSe quantum dots (QDs) during their transport from Shewanella onedensis to Caenorchabditis elegans in predation. Fluorescence microscopy and Raman mapping showed that the ingested QDs by C. elegans were located at the gut lumen and subcutaneous tissue, and were partially excreted from the nematode body over time. Micro-X-ray fluorescence (mu-XRF) spectroscopy and Se K-edge X-ray absorption fine structure (XAFS) results further revealed the changed distribution of Se element over time, and a shift in the major Se species from CdSe to Se-0 and Na2SeO3 IV. This work demonstrates the utility of advanced spectral techniques for characterizing QDs in vivo, and may facilitate a better understanding on the environmental transformation and fates of ENMs.
KeywordRay-absorption Spectroscopy Caenorhabditis-elegans Silver Nanoparticles Raman-scattering Exposure
DOI10.1038/s41598-017-04694-6
WOS KeywordRAY-ABSORPTION SPECTROSCOPY ; CAENORHABDITIS-ELEGANS ; SILVER NANOPARTICLES ; RAMAN-SCATTERING ; EXPOSURE
Indexed BySCI
Language英语
WOS IDWOS:000404332100008
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28826
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Tian, LJ,Peng, Y,Chen, DL,et al. Spectral insights into the transformation and distribution of CdSe quantum dots in microorganisms during food-chain transport[J]. SCIENTIFIC REPORTS,2017,7(-):-.
APA Tian, LJ,Peng, Y,Chen, DL,Ma, JY,Yu, HQ,&Li, WW.(2017).Spectral insights into the transformation and distribution of CdSe quantum dots in microorganisms during food-chain transport.SCIENTIFIC REPORTS,7(-),-.
MLA Tian, LJ,et al."Spectral insights into the transformation and distribution of CdSe quantum dots in microorganisms during food-chain transport".SCIENTIFIC REPORTS 7.-(2017):-.
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