La2O3 Nanoparticles: Study of uptake and distribution in Pfaffia glomerata (Spreng.) Pedersen by LA-ICP-MS and µ-XRF.

The production and use of nanoparticles (NPs) in different fields increased in the last years. However, some NPs have toxicological proprieties, making these materials potential emerging pollutants. Therefore, it is important to investigate the uptake, transformation, translocation and deposition of NPs in plants. In this work laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and micro X-ray fluorescence (µ-XRF) were used to investigate the uptake and translocation of La2O3 NPs to stem and leaves of Pfaffia glomerata (Spreng.) Pedersen after in vitro cultivation of plants in presence of 400 mg L-1 of La2O3 NPs. By using LA-ICP-MS and µ-XRF, image of the spatial distribution of La in the leaves was obtained, where higher concentration of La was observed in the main veins. Differences in the signal profile of La in leaves of plant cultivated in the presence of bulk La2O3 (b-La2O3) and La2O3 NPs were observed. Sharp peaks of La indicated that NPs were transported to the stems and leaves of plants treated with La2O3 NPs. Both LA-ICP-MS and µ-XRF techniques have shown to be useful for detecting NPs in plants, but LA-ICP-MS is more sensitive than µ-XRF and allowed better detection and visualization of La distribution in the whole leaf.

• Publication year

  2019

• Venue

  Environmental Science and Technology

• Publication date

  2019-08-26

• Fields of study

  Medicine, Chemistry, Environmental Science

• Identifiers
  DOI 10.1021/acs.est.9b02868PMID 31448907
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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