使用激光诱导等离子体测量海水盐度:声谱特征和分析性能
Ye Tian1,2, Qingxi Liu1, Beibei Wang1
1College of Physics and Optoelectronic Engineering, Ocean University of China, Qingdao 266100, China.
Analytical chemistry
|December 11, 2025
概括
这项研究引入了一种基于激光的新方法,用于同时测量海水的盐度和元素组成. 这种技术比传统的海洋环境监测方法提供了更高的准确性.
科学领域:
- 海洋化学 海洋化学
- 分析化学是一种分析化学.
- 激光诱导的分解光谱学
背景情况:
- 海水的盐度对海洋环境至关重要.
- 现有的方法难以确定元素组成以及盐度.
- 准确的元素分析对于理解盐度的影响至关重要.
研究的目的:
- 开发一种基于激光的方法,同时测量海水的盐度和元素度.
- 研究激光诱导等离子体声学和光谱信号的潜力,用于化学分析.
- 构建和验证用于海水分析的声谱数据融合模型.
主要方法:
- 在海水中产生激光诱导等离子体.
- 使用影图成像,快速成像,水电声测量和光谱学.
- 开发了一种用于预测的声谱数据融合模型.
- 分析了声学和光谱信号,以获得物理和化学信息.
主要成果:
- 合并的声谱数据融合模型在预测盐度方面取得了很高的准确性 (RMSEP: 0.5‰,ARE: 1.63%,RSD: 1.27%).
- 精确确定了元素度 (Na,K,Ca),R2值高于0.99.
- 基于激光的方法表现出比使用单独的声学或光谱数据更高的性能.
- 该方法显示了分析其他透明液体的潜力.
结论:
- 一种基于激光的多式传感方法已成功开发用于海水分析.
- 这种技术可以高精度地同时测量盐度和元素组成.
- 这些发现为海洋环境监测和化学分析提供了有希望的进展.
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