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Submicrometer imaging by laser ablation-inductively coupled plasma mass spectrometry via signal and image deconvolution approaches

Stijn Van Malderen (UGent) , Johannes T van Elteren and Frank Vanhaecke (UGent)
(2015) ANALYTICAL CHEMISTRY. 87(12). p.6125-6132
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Abstract
In this work, pre- and postacquisition procedures for enhancing the lateral resolution of laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) in two- and three-dimensional (2D, 3D) nuclide distribution mapping beyond the laser beam waist are described. 2D images were constructed by projecting a rectangular grid of discrete LA positions, arranged at interspacings smaller than the dimensions of the laser beam waist, onto the sample surface, thus oversampling the region of interest and producing a 2D image convolved in the spatial domain. The pulse response peaks of a low-dispersion LA cell were isolated via signal deconvolution of the transient mass analyzer response. A 3D stack of 2D images was deconvolved by an iterative Richardson-Lucy algorithm with Total Variance regularization) enabling submicrometer image fidelity, demonstrated in the analysis of trace level features in corroded glass. A point spread function (PSF) could be derived from topography maps of single pulse craters from atomic force microscopy. This experimental PSF allows the approach to take into account the laser beam shape, beam aberrations, and the laser-solid interaction, which in turn enhances the spatial resolution of the reconstructed volume.
Keywords
GEOLOGICAL-MATERIALS, ARCHAEOLOGICAL GLASS, EXCIMER-LASER, RESOLUTION, DISTRIBUTIONS, CELLS, SPECTROSCOPY, INCLUSIONS, LA-ICP-MS, X-RAY-FLUORESCENCE

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MLA
Van Malderen, Stijn, et al. “Submicrometer Imaging by Laser Ablation-Inductively Coupled Plasma Mass Spectrometry via Signal and Image Deconvolution Approaches.” ANALYTICAL CHEMISTRY, vol. 87, no. 12, 2015, pp. 6125–32, doi:10.1021/acs.analchem.5b00700.
APA
Van Malderen, S., van Elteren, J. T., & Vanhaecke, F. (2015). Submicrometer imaging by laser ablation-inductively coupled plasma mass spectrometry via signal and image deconvolution approaches. ANALYTICAL CHEMISTRY, 87(12), 6125–6132. https://doi.org/10.1021/acs.analchem.5b00700
Chicago author-date
Van Malderen, Stijn, Johannes T van Elteren, and Frank Vanhaecke. 2015. “Submicrometer Imaging by Laser Ablation-Inductively Coupled Plasma Mass Spectrometry via Signal and Image Deconvolution Approaches.” ANALYTICAL CHEMISTRY 87 (12): 6125–32. https://doi.org/10.1021/acs.analchem.5b00700.
Chicago author-date (all authors)
Van Malderen, Stijn, Johannes T van Elteren, and Frank Vanhaecke. 2015. “Submicrometer Imaging by Laser Ablation-Inductively Coupled Plasma Mass Spectrometry via Signal and Image Deconvolution Approaches.” ANALYTICAL CHEMISTRY 87 (12): 6125–6132. doi:10.1021/acs.analchem.5b00700.
Vancouver
1.
Van Malderen S, van Elteren JT, Vanhaecke F. Submicrometer imaging by laser ablation-inductively coupled plasma mass spectrometry via signal and image deconvolution approaches. ANALYTICAL CHEMISTRY. 2015;87(12):6125–32.
IEEE
[1]
S. Van Malderen, J. T. van Elteren, and F. Vanhaecke, “Submicrometer imaging by laser ablation-inductively coupled plasma mass spectrometry via signal and image deconvolution approaches,” ANALYTICAL CHEMISTRY, vol. 87, no. 12, pp. 6125–6132, 2015.
@article{6985718,
  abstract     = {{In this work, pre- and postacquisition procedures for enhancing the lateral resolution of laser ablation-inductively coupled plasma mass spectrometry (LA-ICPMS) in two- and three-dimensional (2D, 3D) nuclide distribution mapping beyond the laser beam waist are described. 2D images were constructed by projecting a rectangular grid of discrete LA positions, arranged at interspacings smaller than the dimensions of the laser beam waist, onto the sample surface, thus oversampling the region of interest and producing a 2D image convolved in the spatial domain. The pulse response peaks of a low-dispersion LA cell were isolated via signal deconvolution of the transient mass analyzer response. A 3D stack of 2D images was deconvolved by an iterative Richardson-Lucy algorithm with Total Variance regularization) enabling submicrometer image fidelity, demonstrated in the analysis of trace level features in corroded glass. A point spread function (PSF) could be derived from topography maps of single pulse craters from atomic force microscopy. This experimental PSF allows the approach to take into account the laser beam shape, beam aberrations, and the laser-solid interaction, which in turn enhances the spatial resolution of the reconstructed volume.}},
  author       = {{Van Malderen, Stijn and van Elteren, Johannes T and Vanhaecke, Frank}},
  issn         = {{0003-2700}},
  journal      = {{ANALYTICAL CHEMISTRY}},
  keywords     = {{GEOLOGICAL-MATERIALS,ARCHAEOLOGICAL GLASS,EXCIMER-LASER,RESOLUTION,DISTRIBUTIONS,CELLS,SPECTROSCOPY,INCLUSIONS,LA-ICP-MS,X-RAY-FLUORESCENCE}},
  language     = {{eng}},
  number       = {{12}},
  pages        = {{6125--6132}},
  title        = {{Submicrometer imaging by laser ablation-inductively coupled plasma mass spectrometry via signal and image deconvolution approaches}},
  url          = {{http://doi.org/10.1021/acs.analchem.5b00700}},
  volume       = {{87}},
  year         = {{2015}},
}
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