Reactive oxygen species (ROS) are widely recognized as oxygen-containing substances with high chemical reactivity, existing both endogenously within organisms and exogenously in the natural environment. This article, in collaboration with a manufacturer of online water quality monitoring instruments, aims to elaborate on the primary applications of ROS and the pathways through which they enter the human body.

Primary Applications of Reactive Oxygen Species 

1.Strong Oxidant for Disinfection  

ROS act as potent oxidants capable of inactivating microorganisms (e.g., bacteria, viruses). They have emerged as a novel agent in disinfection technology, with applications spanning water, air, food, and vegetable sanitation.

2.Biocidal and Toxin-Inactivating Effects  

The antimicrobial activity of ROS is primarily mediated by their strong oxidative properties. Beyond viral inactivation, ROS can also degrade bacterial toxins and denature antigens such as the hepatitis B surface antigen (HBsAg).

3.Toxicity and Corrosivity Risks  

Despite their disinfectant utility, ROS exhibit inherent toxicity and corrosivity. Their toxic effects stem from the oxidation of unsaturated fatty acids and proteins, which can induce damage to biological tissues. Upon entry into the human body, ROS may cause symptoms including tachypnea, chest tightness, and headaches; severe exposure can even lead to fatal outcomes.

Sources of Reactive Oxygen Species in the Human Body  

ROS can enter the human body through multiple exogenous pathways, such as water pollution, air pollution, ultraviolet (UV) radiation, and tobacco smoke. As a manufacturer of online water quality monitoring instruments, we hereby introduce the ROS900 Online Reactive Oxygen Species Analyzer—a device that enables real-time monitoring of ROS concentrations in water via induced fluorescence or colorimetric methods.