ACS Appl Mater Interfaces 2019 May 25;11(18):16905-16913. Epub 2019 Apr 25.
Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety , Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049 , China.
The physiochemical properties of nanoparticles (NPs), including surface charge, will affect their uptake, transformation, translocation, and final fate in the environment. In this study, we compared the phytoxoxicity and transport behaviors of nano CeO (nCeO) functionalized with positively charged (Cs-nCeO) and negatively charged (PAA-nCeO) coatings. Cucumber seedlings were hydroponically exposed to 0-1000 mg/L of Cs-nCeO and PAA-nCeO for 14 days and the contents, distribution, translocation, and transformation of Ce in plants were analyzed using inductively coupled plasma mass spectrometry, micro X-ray fluorescence (μ-XRF), and X-ray absorption near-edge spectroscopy (XANES), respectively. Read More