Quantitative laser-induced breakdown spectroscopy mapping of centerline segregation via optical emissions of Mn and Cr in steel wire rod products

Jung, Sehoon; Kim, Sunhye; Kim, Sung-Nam; Park, Ikbum; Moon, Young-Hyun; Heo, Jeong-Heon; Nam, Sang‐Ho; Lee, Yonghoon

doi:10.1016/j.mtcomm.2022.104867

Cited by 1 publication

(1 citation statement)

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“…In our previous works, the nonlinear function was found to be successful in calibrating the LIBS signal intensities affected by the self-absorption to the analyte concentrations. 21,22,38,39 The coefficients of determination, R 2 , for K, Mg, Ca, and S were obtained to be 0.9978, 0.9998, 0.9838, and 0.9613, respectively.…”

Section: Calibration Performancementioning

confidence: 96%

Highly Precise Laser-Induced Breakdown Spectroscopy Analysis of Major Mineral Nutrients in Edible Salts Using Miniaturized Salt Ponds and Alternating Laser-Ablation Data Sampling

Park,

Han,

Nam

et al. 2023

Appl Spectrosc

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In this work, we applied a hydrophilicity-enhanced solid substrate and an alternating laser-ablation data sampling (ALADS) scheme to improve laser-induced breakdown spectroscopy (LIBS) measurement precision and demonstrated the performance in analyzing K, Mg, Ca, and S contained in commercially available edible salt products. Five edible salt products from Australia, Bolivia, France, and South Korea were dissolved in water and a tiny volume of each solution was dropped on the solid substrate, that is, a miniaturized salt pond. After being dried, the residual salt crystals distributed still inhomogeneously, but the homogeneity could be significantly improved in comparison with that from typical drop-and-dry methods. The ALADS scheme was applied to extract three precise measurements from 9798 single-shot LIBS spectra covering the entire salt pond. The measurements obtained by ALADS were found to agree well with one another regardless of the inhomogeneous distribution of salt crystals. As a result, the measurement precision was proved remarkably. Limits of detection for K, Mg, Ca, and S were estimated to be 0.64, 1.7, 14, and 530 mg/kg, respectively, which are enough to analyze those elements contained in salts typically at the level of 100 parts per million (ppm) to ∼3 wt% for the purpose of salt quality assessment.

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Section: Calibration Performancementioning

confidence: 96%