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Elemental imaging at the nanoscale: NanoSIMS and complementary techniques for element localisation in plants
Katie L Moore1, Enzo Lombi, Fang-Jie Zhao
1Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, UK. katie.moore@materials.ox.ac.uk
Analytical and Bioanalytical Chemistry
|November 5, 2011
Summary
High-resolution secondary ion mass spectrometry (SIMS) precisely maps elemental distributions in plants at the subcellular level. This technique aids in understanding plant metabolism, mineral transport, and responses to elemental stress.
Area of Science:
- Plant science
- Analytical chemistry
- Biogeochemistry
Background:
- Understanding elemental distributions in plants is vital for plant metabolism, mineral transport, and stress response.
- High-resolution secondary ion mass spectrometry (SIMS) offers subcellular-scale elemental analysis of biological materials.
Purpose of the Study:
- To review recent applications of CAMECA NanoSIMS for determining elemental distributions in plants.
- To highlight the combination of NanoSIMS with complementary techniques for comprehensive plant elemental analysis.
Main Methods:
- Utilizing CAMECA NanoSIMS for high-resolution (down to 50 nm) elemental mapping.
- Analyzing elemental distributions and stable isotopes in plant tissues.
- Integrating NanoSIMS data with complementary techniques like optical microscopy, synchrotron methods (XRF, XAS), TEM, EPMA, PIXE, and ICP-MS.
Main Results:
- NanoSIMS enables high-resolution mapping of nearly all elements and distinguishes stable isotopes.
- The technique can detect elements at low concentrations (mg/kg).
- Combining NanoSIMS with other methods provides a more complete dataset for complex plant science questions.
Conclusions:
- NanoSIMS is a powerful tool for plant elemental analysis at the subcellular level.
- Complementary techniques enhance the scope and depth of elemental distribution studies in plants.
- Further research should address sample preparation, potential artifacts, and future trends in SIMS analysis for plants.
