![]() The strong oxidation potential of H 2O 2, its relatively broad germicidal spectrum, and the innocuous character of its decomposition products (water and oxygen) have led to the extensive use of this species for decontamination and sterilization of clean production sites and healthcare facilities. ![]() 3 For future development of mid-IR laser-based sensor systems, it is therefore necessary to explore alternative strong, interference-free H 2O 2 absorption lines. 3–5 Although these configurations have high sensitivity levels and continuous real-time detection capabilities, they are subject to interference from water lines in the selected spectral regions, which is a potentially significant concern for their field operation. Mid-IR laser-based sensor systems, with minimum detection limits (MDLs) at the parts-per-billion (ppb) level, have previously been reported for monitoring of H 2O 2. 1, 2 In addition, H 2O 2 is relevant in the medical field as a reactive oxygen species used as a biomarker of lung and airway-related inflammation. It is also involved in several environmental processes, including the degradation of pollutants in water by advanced oxidation processes. Hydrogen peroxide (H 2O 2) is a strong oxidizing agent that is associated with the generation of hydroxyl radicals in the atmosphere.
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