Quantitative Analysis of Carbon Steel with Multi-Line Internal Standard Calibration Method Using Laser-Induced Breakdown Spectroscopy

Abstract

A multi-line internal standard calibration method is proposed for the quantitative analysis of carbon steel using laser-induced breakdown spectroscopy (LIBS). A procedure based on the method was adopted to select the best calibration curves and the corresponding emission lines pairs automatically. Laser-induced breakdown spectroscopy experiments with carbon steel samples were performed, and C, Cr, and Mn were analyzed via the proposed method. Calibration curves of these elements were constructed via a traditional single line internal standard calibration method and a multi-line internal standard calibration method. The calibration curves obtained were evaluated with the determination coefficient, the root mean square error of cross-validation, and the average relative error of cross-validation. All of the parameters were improved significantly with the proposed method. The results show that accurate and stable calibration curves can be obtained efficiently via the multi-line internal standard calibration method.

Approach to using 3D laser-induced breakdown spectroscopy (LIBS) data to explore the interaction of FLiNaK and FLiBe molten salts with nuclear-grade graphite

“…In recent years, many studies have detailed the use of LIBS for elemental depth profiling and mapping. 2–28 The reader is pointed toward a recent review by Jolivet et al for more thorough exposition of published LIBS imaging studies. 22 The LIBS technique involves irradiation of a sample with an intense, focused beam of light from a pulsed laser source.…”

Role of Focusing Distance in Picosecond Laser-Induced Cu Plasma Spectra

“…LIBS offers distinct advantages for in situ, real-time, standoff, and contactless detection, and it requires less sample preparation and consumption [2]. This technique is widely applied to the fields of energetic materials [3], metallurgical engineering [4], space exploration [2], industry manufacture [5], food safety [6], environmental monitoring [7], agricultural product [1], resources and energy [8], archaeology [9], and clinical diagnostics [10]. However, the stability and repeatability of the plasma emission, along with the detection accuracy, are easily altered by the wavelength of the input light, pulse duration and its energy, the distance of lens-to-sample, and the target characteristics.…”

Impact of laser-induced breakdown spectroscopy implementation for the quantification of carbon content distribution in archaeological ferrous metals

“…In our previous study [25], we demonstrated that an internal standard method [26,27] is necessary to have a better result for quantitative analysis. The upper transition energy levels for these two lines are close to 7.685 eV for C I and 8.038 eV for the Fe II line (204.06 nm).…”