Abstract This article discusses multi-element quantification in pressed pellets of copper‑nickel ore powders using laser-induced breakdown spectroscopy (LIBS). Thirty-two copper‑nickel samples were used in this study. 10 ml (~14–17 g) of each sample of copper‑nickel powder was granulated using a hydraulic press. The samples were then analyzed using commercial LIBS analyzer. A comparison between univariate and multivariate (based on partial least squares regression) calibration models to determine the concentration of copper, nickel, cobalt, iron, magnesium, and sulfur in the samples is discussed. Six independent samples were used as blind samples to test the accuracy and robustness of the calibration models. This paper demonstrates the ability of the LIBS technique to measure accurately the concentration of several elements of interest in copper‑nickel ore samples rapidly with minimal sample preparation.

中文翻译：

---

使用激光诱导击穿光谱法定量铜镍矿石样品中的铜、镍和其他元素

摘要 本文讨论了使用激光诱导击穿光谱 (LIBS) 对铜镍矿粉压球团进行多元素量化。本研究使用了 32 个铜镍样品。使用液压机将 10 毫升（~14-17 克）的铜镍粉末样品造粒。然后使用商业 LIBS 分析仪分析样品。讨论了单变量和多变量（基于偏最小二乘回归）校准模型之间的比较，以确定样品中铜、镍、钴、铁、镁和硫的浓度。使用六个独立样本作为盲样本来测试校准模型的准确性和稳健性。