Sensing system for multiple measurements of trace elements using laser-induced breakdown spectroscopy

Satoshi Ikezawa, Muneaki Wakamatsu, Joanna Pawłat, Toshitsugu Ueda

    Research output: Contribution to journalArticlepeer-review

    10 Citations (Scopus)

    Abstract

    The setup, micro-droplet sampling system combined with a gas-flow system for measurement using laser-induced breakdown spectroscopy (LIBS) is introduced. This setup was designed for high sensitive quantitative analysis using ink-jet technology and gas-flow assistance. The setup presented here allowed precise detection of a uniform volume of 30-μm micro-droplet location for guiding it into a 53.2-μm beam spot area, under the effects of any ambient gas. In this paper, experimental results with the use of two kind of ambient gasses; air and argon gas, were compared in order to find proper time-delay values for time-resolving spectroscopy. From time-gated spectroscopy analysis of these experiments, different relaxation time spectral data were obtained. This result indicates that in the case of using argon ambient for assistance, broader range of time-gate setting is required as compared with the case of using air ambient. Sensitive LIBS measurement for trace elements was shown by using the proper gate-setting value.

    Original languageEnglish
    Pages (from-to)115-119
    Number of pages5
    JournalIEEJ Transactions on Sensors and Micromachines
    Volume129
    Issue number4
    DOIs
    Publication statusPublished - 2009

    Keywords

    • Ar-gas flow
    • Laser-induced breakdown spectroscopy
    • LIBS
    • Micro-droplet

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Mechanical Engineering

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