衰荡光谱法测量OH自由基的理论研究

The theory of measuring hydroperoxyl radical by cavity ring-down spectroscopy

提出了一种用衰荡光谱法测量对流层OH自由基的新方法 ,并从理论上推导出OH自由基浓度与衰荡时间的关系 ,讨论了该方法的可行性和灵敏度 ,分析了各种干扰因素对测量的影响 ,认为该方法与传统测量OH自由基的方法相比优势较为明显。

This paper gave a new method for measuring tropospheric hydroperoxyl radical based on cavity ring down spectroscopy. We deduced the relationship between the OH radical concentration and the laser ring down time. The validity and sensitivity of this method were discussed. We also assessed the effection of some interference. In the end, we concluded that this method is better than the traditional ones.