Jump to main content
Jump to site search

Issue 3, 2012
Previous Article Next Article

Femtosecond laser ablation particle introduction to a liquid sampling-atmospheric pressure glow discharge ionization source

Author affiliations

Abstract

This work describes the use of a compact, liquid sampling–atmospheric pressure glow discharge (LS-APGD) ionization source to ionize metal particles within a laser ablation aerosol. Mass analysis was performed with a Thermo Scientific Exactive Mass Spectrometer which utilizes an orbitrap mass analyzer capable of producing mass resolution exceeding m/Δm > 160,000. The LS-APGD source generates a low-power plasma between the surface of an electrolytic solution flowing at several μl min−1 through a fused silica capillary and a counter electrode consisting of a stainless steel capillary employed to deliver the laser ablation particles into the plasma. Sample particles of approximately 100 nm were generated with an Applied Spectra femtosecond laser located remotely and transported through 25 meters of polyurethane tubing by means of argon carrier gas. Samples consisted of an oxygen free copper shard, a disk of solder, and a one-cent U.S. coin. Analyte signal onset was readily detectable relative to the background signal produced by the carrier gas alone. The high mass resolution capability of the orbitrap mass spectrometer was demonstrated on the solder sample with resolution exceeding 90,000 for Pb and 160,000 for Cu. In addition, results from a laser ablation depth-profiling experiment of a one cent coin revealed retention of the relative locations of the ∼10 μm copper cladding and zinc rich bulk layers.

Graphical abstract: Femtosecond laser ablation particle introduction to a liquid sampling-atmospheric pressure glow discharge ionization source

Back to tab navigation

Publication details

The article was received on 15 Nov 2011, accepted on 17 Jan 2012 and first published on 09 Feb 2012


Article type: Communication
DOI: 10.1039/C2JA10331A
Citation: J. Anal. At. Spectrom., 2012,27, 385-389
  •   Request permissions

    Femtosecond laser ablation particle introduction to a liquid sampling-atmospheric pressure glow discharge ionization source

    A. J. Carado, C. D. Quarles, A. M. Duffin, C. J. Barinaga, R. E. Russo, R. K. Marcus, G. C. Eiden and D. W. Koppenaal, J. Anal. At. Spectrom., 2012, 27, 385
    DOI: 10.1039/C2JA10331A

Search articles by author

Spotlight

Advertisements