Issue 10, 2016

Angular resolution dependency in 2D LA-ICP-MS mapping – the case for low-dispersion laser ablation cells

Abstract

In LA-ICP-MS imaging mostly lateral resolution is considered, but this work will show that linear artifacts with an angular aspect to the line scan direction may have a different spatial resolution, depending on the blur introduced by LA sampling and aerosol washout/transfer. This implies that upon scanning an irregularly shaped artifact, the spatial resolution in different locations may vary, the severity of which will be a function of the amount of “smearing” induced by the LA-ICP-MS system, invariably related to the design of the LA cell and aerosol washout/transfer efficiency. As reported previously (DOI: 10.1021/acs.analchem.6b02052), blur can be expressed as a convolution of the input image (representing the 2D elemental distribution) with point (PSF) and line (LSF) spread functions associated with ablation crater profiles and ICP-MS profiles of single pulses, respectively. Based on empirically derived PSFs and LSFs, and using a numerical calculation approach, the continuous-scanning LA-ICP-MS output of an angular-sensitive radial resolution target (Siemens star) was simulated to visualize the angular resolution dependency associated with ablation cell characteristics.

Graphical abstract: Angular resolution dependency in 2D LA-ICP-MS mapping – the case for low-dispersion laser ablation cells

Article information

Article type
Paper
Submitted
30 juin 2016
Accepted
20 juil. 2016
First published
20 juil. 2016

J. Anal. At. Spectrom., 2016,31, 1998-2004

Angular resolution dependency in 2D LA-ICP-MS mapping – the case for low-dispersion laser ablation cells

J. T. van Elteren and F. Vanhaecke, J. Anal. At. Spectrom., 2016, 31, 1998 DOI: 10.1039/C6JA00234J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements