Characterizing the uptake, accumulation and toxicity of silver sulfide nanoparticles in plants.

ABSTRACT: Silver nanoparticles (Ag-NPs) are used in a wide range of everyday products, leading to increasing concerns regarding their accumulation in soils and subsequent impact on plants. Using single particle inductively coupled plasma mass spectrometry (spICP-MS) and synchrotron-based techniques including X-ray absorption spectroscopy (XAS) and X-ray fluorescence microscopy (XFM), we characterized the uptake, speciation, and translocation of insoluble Ag₂S-NPs (an environmentally-relevant form of Ag-NPs in soils) within two plant species, a monocot and a dicot. Exposure to 10 mg Ag L^-1 as Ag₂S-NPs for one week resulted in a substantial increase in leaf Ag concentrations (3.8 to 5.8 μg Ag g^-1 dry mass). Examination using XAS revealed that most of the Ag

SUBMITTER: Wang P 

PROVIDER: S-EPMC7424533 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature