自校准的激光诱导分解光谱用于悬浮火山灰的定量元素分析
Aya Taleb1, Marcella Dell'Aglio2, Rosalba Gaudiuso1
1Department of Chemistry, University of Bari, Bari, Italy.
Applied spectroscopy
|March 26, 2024
概括
激光诱导分解光谱 (LIBS) 能够实时对火山灰进行元素分析. 这种方法对于火山监测和危险评估至关重要,为火山弹性材料提供准确的化学特征.
科学领域:
- 地质化学 地质化学
- 分析化学 分析化学
- 火山学 火山学是一门学科.
背景情况:
- 火山灰分析对于监测火山爆发和评估危险至关重要.
- 激光诱导分解光谱 (LIBS) 为在极端环境中进行现场分析提供了潜力.
- 现有的火山灰化学表征方法可能耗时.
研究的目的:
- 使用LIBS.确定悬浮火山灰的元素组成.
- 为LIBS分析不同大小的灰粒建立最佳的实验条件.
- 验证自校准的LIBS方法用于火山灰的定量分析.
主要方法:
- 火山灰样本被悬浮在空气中,使用激光诱导的冲击波.
- 进行了参数研究,以优化LIBS等离子体排放光谱的获取.
- 自校准的LIBS,包括无校准的LIBS,用于定量分析.
- 使用Fe线的强度校准用于确定设备响应,避免使用外部校准灯.
主要成果:
- LIBS的实验成功地确定了悬浮火山灰的元素组成.
- 自校准的LIBS方法有效考虑了自我吸收效应.
- 为了不同灰大小,建立了最佳的实验条件.
- 结果显示,与火山灰成分的既定文献值有很好的一致性.
结论:
- 使用LIBS进行火山灰的实时元素分析是可行的和有效的.
- 自校准的LIBS为定量化学表征提供了一个强大的方法.
- 这种技术具有提高火山监测和危险评估的巨大潜力.
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