High levels of reactive chemicals may be emitted to the indoor air during household surface cleaning, leading to poorer air quality and potential health hazards. Hydrogen peroxide (H₂O₂)-based cleaners have gained popularity in recent years, especially in times of COVID-19. Still, little is known regarding the effects of H₂O₂ cleaning on indoor air composition. In this work we monitored time-resolved H₂O₂ concentrations during a cleaning campaign in an occupied single-family residence using a cavity ring-down spectroscopy (CRDS) H₂O₂ analyzer. During the cleaning experiments, we investigated how unconstrained (i.e., “real-life”) surface cleaning with a hydrogen peroxide solution influenced the indoor air quality of the house, and performed controlled experiments to investigate factors that could influence H₂O₂ levels including surface area and surface material, ventilation, and dwell time of the cleaning solution. Mean peak H₂O₂ concentrations observed following all surface cleaning events were 135 ppbv. The factors with the greatest effect on H₂O₂ levels were distance of the cleaned surface from the detector inlet, type of surface cleaned, and solution dwell time.

中文翻译：

---

单户住宅表面清洁产生的过氧化氢排放

在家庭表面清洁过程中，高浓度的反应性化学物质可能会排放到室内空气中，从而导致空气质量下降和潜在的健康危害。近年来，基于过氧化氢 (H ₂ O _{2 ) 的清洁剂越来越受欢迎，尤其是在 COVID-19 期间。然而，关于 H 2} O ₂清洁对室内空气成分的影响知之甚少。在这项工作中，我们使用空腔衰荡光谱 (CRDS) H ₂ O ₂分析仪在有人居住的单户住宅的清洁活动中监测了时间分辨的H ₂ O ₂浓度。在清洁实验期间，我们研究了如何不受约束（即，“现实生活”）用过氧化氢溶液清洁表面会影响房屋的室内空气质量，并进行对照实验以研究可能影响 H 2 O 2 水平的因素，包括表面积和表面材料、_通风和_停留时间清洁溶液。在所有表面清洁事件后观察到的平均峰值 H ₂ O _{2浓度为 135 ppbv。对 H 2} O ₂水平影响最大的因素是清洁表面与检测器入口的距离、清洁表面的类型和溶液停留时间。