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多纤维维度转换激光诱导分解光谱 (MFDC-LIBS):实时空间解析的LIBS用于异质矩阵中的增强量化

Ze Tian¹, Yue Tang¹, Weiheng Kong¹

¹Research Center of Analytical Instrumentation, School of Mechanical Engineering, Sichuan University, Chengdu 610065, People's Republic of China.

Analytical chemistry

|January 6, 2026

概括

一个新的多纤维维度转换LIBS (MFDC-LIBS) 系统提高了元素分析的准确性. 这种激光诱导分解光谱法提高了材料在现场成分分析的定量精度.

科学领域:

分析化学分析化学
频谱学是一种光谱学.
材料科学材料科学材料科学

背景情况:

激光诱导分解光谱 (LIBS) 提供了快速的组成分析,但由于在等离子体羽毛中元素分布不均,因此难以准确.
现场分析受到传统LIBS定量方法的有限准确性和稳定性的限制.

研究的目的:

开发一种新型的多纤维维维度转换LIBS (MFDC-LIBS) 系统,以应对元素分布的挑战.
调查单个等离子体羽毛中元素分布的差异化表征.
提高LIBS定量分析的准确性和稳定性.

主要方法:

开发一个使用100个光纤的MFDC-LIBS概念验证系统.
从等离子体羽毛同时收集2D空间分布信息.
使用反射网格实现阵列到线性转换和光谱分散.
通过面积阵列CMOS探测器直接捕获等离子体图像.

主要成果:

在MFDC-LIBS系统显著改善了线性,定量准确性和稳定性.
在岩石样本中,平方根平均误差 (RMSE) 减少了74%,Ca,70%的Ba,77%的Mg和66%的Na.
在等离子体羽毛中成功实现了元素分布的分化.

结论:

MFDC-LIBS系统提供了一个强大的和可扩展的方法,用于提高LIBS的分析精度.
这种方法将空间诊断与复杂固体材料的改进定量能力相结合.
MFDC-LIBS克服了传统LIBS的局限性,用于准确的现场组合分析.

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