将受控蒸发混合器与空腔环降光谱技术相结合,加强水蒸气同位素校准

IF 2.5 4区 化学 Q3 CHEMISTRY, ANALYTICAL
Jangil Moon, Yeongcheol Han, Songyi Kim, Jeonghoon Lee, Soon Do Hur
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引用次数: 0

摘要

水汽同位素(δ18O 和 δ2H)的精确测量对于加深我们对水文循环的理解和提高水文模型的精度至关重要。本研究介绍了一种创新的校准方法,即使用受控蒸发混合器(CEM),通过空腔环降光谱测定大气水汽中的稳定同位素比值。CEM 技术能可靠地产生稳定的水汽流,这对提高同位素测量的精度和准确性至关重要。它能快速适应水蒸气浓度的变化,并与不同的水标准兼容,从而提高了校准的可靠性。在从 900 ppmv 到超过 25,000 ppmv 的广泛浓度范围内生成水蒸气的可重复性已得到证实,再加上记忆效应的大幅降低,使这种方法在实验室和现场环境中都非常有效。这一校准技术的进步极大地增强了连续大气水蒸气分析的研究能力,为深入了解水文过程和大气动力学提供了可能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integrating the controlled evaporation mixer with cavity ring-down spectroscopy for enhanced water vapor isotope calibration
Accurate measurement of water vapor isotopes (δ18O and δ2H) is fundamental for advancing our understanding of the hydrological cycle and improving hydrological model accuracy. This study introduces an innovative calibration methodology using a controlled evaporation mixer (CEM) for determining stable isotopic ratios in atmospheric water vapor via cavity ring-down spectroscopy. The CEM technique reliably produces a stable water vapor stream, crucial for enhancing the precision and accuracy of isotopic measurements. Its rapid adaptation to changes in water vapor concentration and compatibility with different water standards enhance calibration reliability. Demonstrated reproducibility in generating water vapor across a broad concentration range from 900 to over 25,000 ppmv, coupled with a substantial reduction in memory effects, makes this approach highly effective in both laboratory and field settings. This calibration advancement greatly enhances research capabilities for continuous atmospheric water vapor analysis, providing deeper insights into hydrological processes and atmospheric dynamics.
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来源期刊
Journal of Analytical Science and Technology
Journal of Analytical Science and Technology Environmental Science-General Environmental Science
CiteScore
4.00
自引率
4.20%
发文量
39
审稿时长
13 weeks
期刊介绍: The Journal of Analytical Science and Technology (JAST) is a fully open access peer-reviewed scientific journal published under the brand SpringerOpen. JAST was launched by Korea Basic Science Institute in 2010. JAST publishes original research and review articles on all aspects of analytical principles, techniques, methods, procedures, and equipment. JAST’s vision is to be an internationally influential and widely read analytical science journal. Our mission is to inform and stimulate researchers to make significant professional achievements in science. We aim to provide scientists, researchers, and students worldwide with unlimited access to the latest advances of the analytical sciences.
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