The application of toxic gas detectors in industry
According to the hazards, we classify toxic and harmful gases into two categories: combustible gases and toxic gases. Due to their different properties and hazards, their detection methods also vary.
Toxic gases can exist in production materials and can be detected by toxic gas detectors. Like most organic chemicals (VOCs), they may also exist in by-products of various stages of the production process, such as ammonia, carbon monoxide, hydrogen sulfide, and so on. They are the most hazardous factors to the staff. This kind of harm not only includes immediate harm, such as physical discomfort, illness, death, etc., but also long-term harm to the human body, such as disability, cancer, etc. The detection of these toxic and harmful gases is an issue that developing countries should start to pay sufficient attention to. The TWA (8-hour statistical weighted average), STEL (15 minute short-term exposure level), IDLH (immediate lethal dose) (ppm), and MAC (maximum allowable concentration in the workshop) of common toxic and harmful gases are mg/m3. With different types of gases, their TWA, STEL, IDLH, MAC values may vary to some extent. Currently, for the detection of specific toxic gases, we use specialized gas sensors the most. It can include the above. All gas sensors listed, including the photoionization detectors introduced in the first two chapters. Among them, the most common, mature, and comprehensive method for detecting inorganic gases is the constant potential electrolysis method, which is commonly known as electrochemical sensors.
At present, we attach great importance to the detection of gases that can cause acute poisoning, such as hydrogen sulfide and hydrogen cyanide. However, we do not pay enough attention to the detection of gases that can cause chronic poisoning, such as aromatic hydrocarbons and alcohols. In fact, the latter poses no less harm to the health and safety of workers than gases that can cause acute poisoning! They may cause cancer and other hidden diseases, affecting the lifespan and health of workers. The emergence of this phenomenon is not only due to cognitive reasons, but also due to the lack of suitable organic gas detectors that can detect lower concentrations in the market in the past. With the development of science and technology and the improvement of people's health awareness, people are no longer satisfied with just "coming to work happily and going home safely", but are pursuing higher quality of life and living conditions. People are not only concerned about today's work, but also about tomorrow's life after retirement.
Therefore, in industrial health and safety work, toxic gas detectors should be used to protect personnel safety, and new concepts and ideas should be constantly introduced to not only avoid immediate danger, but also to pay attention to avoiding future tragedies. All of these need to be continuously improved and enhanced through the formulation of regulations and the improvement of people's quality.
