[Quantitative analysis of vanadium and titanium in steel samples using LIBS].

Area of Science:

• Analytical Chemistry
• Materials Science
• Spectroscopy

Context:

• Accurate elemental analysis of steel is crucial for quality control and material characterization.
• Laser-induced breakdown spectroscopy (LIBS) offers rapid multi-elemental analysis capabilities.
• Quantifying trace elements like vanadium and titanium in steel presents analytical challenges.

Purpose:

• To compare the effectiveness of basic calibration and internal calibration methods in LIBS for analyzing vanadium and titanium concentrations in steel.
• To establish reliable calibration curves for V and Ti using selected spectral lines and iron as the internal standard.
• To determine the optimal LIBS methodology for accurate and precise elemental quantification in steel matrices.

Summary:

• Vanadium (V) and titanium (Ti) concentrations in steel were determined using Laser-induced breakdown spectroscopy (LIBS).
• Spectral lines for V (440.85 nm), Ti (334.19 nm), and Fe (438.35 nm) as an internal standard were utilized.
• The internal calibration method yielded higher fitting correlation coefficients (R2 > 0.995) and reduced measurement errors (<4%) compared to the basic calibration method.

Impact:

• The study demonstrates the superiority of the internal calibration method for accurate vanadium and titanium quantification in steel using LIBS.
• Results provide a validated analytical approach for quality control in steel production and alloy development.
• This research contributes to the advancement of LIBS applications in materials analysis, offering improved precision and reliability.