优化宽带中红外吸收光谱的数据分析:混合数据集方法
Roderik Krebbers1, Laurens A Æ Sluijterman2, Joris Meurs1
1Life Science Trace Detection Laboratory, Department of Analytical Chemistry & Chemometrics, Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, the Netherlands.
一种新的模拟方法通过改进数据处理来增强中红外光谱中的气体检测. 该方法改进了经典最小平方 (CLS) 和部分最小平方 (PLS) 模型,提高了微量气体分析的准确性.
科学领域:
- 频谱学是一种光谱学.
- 分析化学 分析化学
- 激光技术 激光技术 激光技术
背景情况:
- 宽带中红外 (中红外) 光谱学正在推进使用新型激光源进行敏感的微量气体检测.
- 来自这些来源的高分辨率光谱由于仪器特定的噪声和基线偏移而带来挑战.
- 有效的数据处理对于克服这些挑战和最大限度地利用复杂的光谱数据至关重要.
研究的目的:
- 开发一种基于模拟的方法,用于增强宽带中红外气体传感中的数据处理.
- 通过优化光谱分析技术,提高气体化合物检测的准确性和可靠性.
- 为了使仪器和应用特定的检测极限的先验估计.
主要方法:
- 通过将模拟的吸收光谱与测量的背景强度光谱相结合,构建一个现实的模拟环境.
- 将仪器特定效应 (如基线) 纳入模拟数据中.
- 将工作流应用于8-11微米区域的现实测量,以检测出口气中的乙.
主要成果:
- 模拟方法显著改善了经典最小平方 (CLS) 和部分最小平方 (PLS) 模型.
- 该方法允许对CLS配件进行微调,并为PLS模型提供现实的训练集.
- 在复杂的呼吸样本中成功检测了微量乙水平,证明了该方法的有效性.
结论:
- 提出的工作流优化,培训和评估宽带中红外气体频谱的数据处理技术.
- 这种方法广泛适用于各种具有宽带功能的气体吸收光谱仪器.
- 它提供了一种强大的方法来改进和评估各种数据处理技术,以加强气体传感.
更多相关视频
06:50O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression
Published on: November 8, 2019
11:05High-definition Fourier Transform Infrared FT-IR Spectroscopic Imaging of Human Tissue Sections towards Improving Pathology
Published on: January 21, 2015
相关概念视频
Applications of IR Spectroscopy: Overview
Infrared (IR) Spectroscopy: Overview
Different compounds display unique properties due to their...
IR Absorption Frequency: Hybridization
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
According to Hooke's law, the vibrational frequency is directly proportional to...
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
The ATR process begins by directing a beam...
IR Spectroscopy: Molecular Vibration Overview
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...
