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Related Concept Videos

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Updated: Feb 20, 2026

Laser-induced Breakdown Spectroscopy: A New Approach for Nanoparticle's Mapping and Quantification in Organ Tissue
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Highly concentrated, ring-shaped phase conversion laser-induced breakdown spectroscopy technology for liquid sample

Qingyu Lin, Zhimei Wei, Hongli Guo

    Applied Optics
    |October 20, 2017
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    Summary
    This summary is machine-generated.

    A new ring-shaped phase conversion method enhances liquid sample analysis with laser-induced breakdown spectroscopy (LIBS). This technique improves element detection limits by concentrating samples into a stable ring film.

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    Area of Science:

    • Analytical Chemistry
    • Spectroscopy
    • Materials Science

    Background:

    • Direct liquid sample analysis using laser-induced breakdown spectroscopy (LIBS) often suffers from poor signal stability and homogeneity.
    • Traditional liquid-to-solid conversion methods for LIBS analysis can be inefficient and may not ensure uniform elemental distribution.

    Purpose of the Study:

    • To develop a novel, highly concentrated, ring-shaped phase conversion (RSPC) method for improved liquid sample analysis via LIBS.
    • To enhance the homogeneity and stability of target elements in liquid samples for more accurate LIBS measurements.
    • To achieve lower limits of detection for various metal elements in liquid samples.

    Main Methods:

    • A ring-shaped phase conversion (RSPC) method was developed using a modified glass petri dish with a circular groove.
    • Liquid samples containing metal particles were mixed with polyvinyl alcohol (PVA) and heated to form a solidified, metal-enriched polymer ring film.
    • Laser-induced breakdown spectroscopy (LIBS) was employed to analyze the elemental composition of the prepared ring films.

    Main Results:

    • The RSPC method successfully created a metal-enriched polymer ring film with enhanced homogeneity of target elements.
    • The RSPC-LIBS technique demonstrated significantly improved and stabilized plasma signals compared to direct liquid sample analysis.
    • Achieved limits of detection (LODs) for Ag, Cu, Cr, and Ba were 0.098, 0.18, 0.83, and 0.046 μg·mL⁻¹, respectively, showing substantial improvement.

    Conclusions:

    • The developed RSPC method offers a superior approach for liquid sample analysis using LIBS.
    • The controlled ring-shaped concentration effectively enhances plasma signal stability and reduces detection limits.
    • This technique provides a promising advancement for quantitative elemental analysis of liquid samples.