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Related Concept Videos

Flame Photometry: Overview01:02

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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
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In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
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Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Related Experiment Video

Updated: May 1, 2026

Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
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Flame-enhanced laser-induced breakdown spectroscopy.

L Liu, S Li, X N He

    Optics Express
    |April 11, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Flame-enhanced laser-induced breakdown spectroscopy (LIBS) boosts sensitivity by creating plasmas in an oxy-acetylene flame. This technique improves signal intensity and spectral resolution for better elemental analysis.

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    Area of Science:

    • Analytical Chemistry
    • Spectroscopy
    • Plasma Physics

    Background:

    • Laser-induced breakdown spectroscopy (LIBS) is a valuable technique for elemental analysis.
    • Improving LIBS sensitivity and spectral resolution remains a key research objective.

    Purpose of the Study:

    • To investigate flame-enhanced laser-induced breakdown spectroscopy (LIBS) for improved sensitivity.
    • To analyze the effects of an oxy-acetylene flame on laser-induced plasma characteristics.

    Main Methods:

    • Generated laser-induced plasmas within the blue outer envelope of a neutral oxy-acetylene flame.
    • Utilized fast imaging and temporally resolved spectroscopy to characterize the plasmas.
    • Calculated electron temperatures and densities to understand flame-plasma interactions.

    Main Results:

    • Observed signal intensity enhancement of up to 4 times.
    • Achieved a narrowed full width at half maximum (FWHM) of emission lines down to 60%.
    • Determined that high-temperature, low-density plasmas were formed within the first 4 µs.

    Conclusions:

    • Flame-enhanced LIBS significantly improves emission line intensity and spectral resolution.
    • The flame environment creates optimal plasma conditions (high-temperature, low-density) for enhanced LIBS performance.
    • This approach holds considerable potential for advancing LIBS sensitivity and spectral analysis capabilities.