Al and Si quantitative analysis in aqueous solutions by LIBS method

Area of Science:

• Analytical Chemistry
• Spectroscopy
• Materials Science

Background:

• Accurate elemental analysis is crucial for environmental and biological studies.
• Laser-Induced Breakdown Spectroscopy (LIBS) is a promising technique for elemental determination.
• Traditional LIBS calibration relies on specific spectral lines, which can be limiting.

Purpose of the Study:

• To present results of LIBS measurements for Al and Si content in aqueous solutions.
• To validate LIBS quantitative analysis of Al and Si in biological materials.
• To explore the application of Factorial Analysis (FA) for LIBS spectral data processing.

Main Methods:

• Utilized Laser-Induced Breakdown Spectroscopy (LIBS) for elemental analysis.
• Developed calibration curves with high linearity (R² > 0.99).
• Employed Factorial Analysis (FA) for spectral data processing and quantitative analysis.

Main Results:

• LIBS demonstrated good linearity and high accuracy (R² > 0.99) for Al and Si determination.
• LIBS results for biological samples showed good agreement with Atomic Absorption Spectrometry (AAS) verification.
• Factorial Analysis (FA) enabled quantitative analysis using entire spectra for Si, surpassing single-line calibration.

Conclusions:

• LIBS is a reliable method for quantifying Al and Si in aqueous and biological samples.
• Factorial Analysis (FA) provides an advanced, effective approach for LIBS quantitative analysis.
• The study highlights the potential of FA in elemental analysis using LIBS spectra.