At present, the country has issued standards for the detection of formaldehyde in indoor environments.
1. The national standard of the People's Republic of China "Sanitary Standards for Formaldehyde in the Air of the Room" stipulates that the maximum allowable concentration of formaldehyde in the air of the room is 0.08 mg / m3.
Volatile organic compounds (VOCs) are, in a literal sense, such substances are "volatile" organic chemicals. Volatility is a physical property that can be judged by "saturated vapor pressure" or "boiling point"; VOCs are active substances, are reactive, and are a chemical property that can undergo photochemical reactions.
In short, VOCs are a class of organic compounds that are physically volatile and chemically reactive.
Let's take a closer look at the definition of VOCs in various countries, starting with the United States, because he is the first country in the world to begin legislative control of VOCs. Over time and the deepening of the understanding of VOCs, Xiao E deeply realized that the definition of VOCs is not just as simple as a concept, but more tells us which direction we should start from? Which VOCs to control? How to control VOCs? In order to obtain the effect of improving ambient air quality.
[Use 1] Used as an analytical reagent and a solvent for vinyl resin and acetylene.
[Use two] It is an excellent organic solvent. It is used as a solvent for polyurethane, polyacrylonitrile, and polyvinyl chloride. It is also used as an extractant, a raw material for medicine and pesticides.
Recently, calls from residents in the southeast area of the city of Changchun reflect intermittent and irritating odors, which mainly appear at night and rainy weather with low air pressure. The source of the odor is unknown.
In this regard, Changchun Ecological Environment Bureau attaches great importance. Since the beginning of August, the monitoring organization has been organized to monitor the surrounding areas of the residential districts around the Rose Valley, Ocean Cannes and Whistler Towns where the complaints are concentrated, and no significant pollutants have been found. At the same time, the organization first investigated the entire area of Jingyue High-tech Zone, and found no source of odor pollution from the masses. Later, it expanded the scope and conducted multiple rounds of comprehensive investigations. The area was expanded to Jingyue High-tech Zone, Erdao District, Economic Development Zone, Nanguan District, Changchun New District, and Lotus Mountain Resort. No source of odor pollution was found by the masses.
The Rugao Municipal Party Committee ’s Propaganda Department released the 新橙彩票 through the official Rugao ’s “Rugao Post” and learned from the “12.18” accident investigation team of Rugao Zhongchang Chemical Co., Ltd .: On the morning of December 18, a chemical accident occurred in Rugao Zhongchang Chemical Co., Ltd. The accident killed three people.
What are the common toxic and harmful gases in our work and life? Toxic and harmful gases can be divided into two categories:
Peroxyacetic acid disinfectant is a strong oxidant that can kill bacteria and fungi such as E. coli, Staphylococcus aureus, Candida albicans, and Staphylococcus albicans. Mainly used for disinfection of food processing plants, food freezers, meat joint plants, slaughterhouses, livestock and poultry sheds, wards, surfaces of general objects, tools, clothing, rufangs, scaffolding, etc.
The production of carbon monoxide in underground garages mainly originates from automobile engines. When the engine is running at idle, due to insufficient combustion of gasoline, exhaust gas containing a large amount of CO will be generated. The underground parking lot is a closed environment. Vehicles come in and out frequently, and the exhaust gas is not easy to be discharged. It is easy to accumulate a large amount of CO gas, which causes a pungent odor to permeate the parking lot and damages human health. If the gas concentration is too high, it will cause fire and explosion. Under standard conditions ...
Gas is closely related to our days, but because of its common attributes, it is not easy to be found and detected. Once a toxic and harmful gas leaks, we are often caught off guard and cause major damage and disaster. Therefore, it is necessary to install gas detectors (wireless gas alarms) whether industrial production or daily life. There are a wide range of gas detectors (wireless gas alarms) on the market. Toray Sunon Technology can refer to the following aspects when buying and selling. ...
The wireless signal transmission fixed detector produced by Shenzhen East Sun Technology Co., Ltd. adds the wireless transmission function on the basis of the original wired detector. Field applications only need to supply power to the detector, no wiring is required, and the field gas The concentration signal is transmitted wirelessly to the rear monitoring room. The wireless signal transmission fixed detector uses a large screen to display multiple measurement information and is equipped with a remote control, which makes the operation intuitive and clear for customers. Multiple choices for customers!