Thread Content
Bromine is also an element of the sea. There is a large amount of bromine in seawater; in addition, bromine is also found in salt lakes and some mineral waters. Due to the reactive nature of its elemental form, elemental bromine is difficult to find in nature. The most common forms are bromides and bromates. Bromine is also present in aquatic plants such as seaweed, and bromine was first discovered in the extracts of seaweed. Perhaps some people think that the element bromine is far removed from our lives, and that it can only be seen in laboratories along with its compounds. Indeed, bromine is not as closely related to our lives as oxygen, nor is it sought after and admired by people like gold; it is also not as integral to our daily lives as iron and aluminum. But in fact, bromine compounds also have a wide range of uses; silver bromide is used as a photosensitive material in photography. When you press the shutter with a \"click,\" some of the silver bromide in the photo is decomposed to release silver, thereby producing what we call film. Lithium bromide refrigeration technology is an environmentally friendly air-conditioning and refrigeration method that has become widely used in recent times. Its advantage lies in the fact that it does not cause the pollution associated with Freon, which gives it good prospects for development. Bromine is also a very useful element in organic synthesis. In high school, many of us conducted the experiment in which ethylene caused bromine water to fade, which actually represents an important class of reactions. In the pharmaceutical industry, many drugs also contain bromine. Bromine is also present in fire extinguishers. The so-called \"1211\" fire extinguishers that we commonly see are polyhalogenated hydrocarbons that contain a bromine atom in their molecules; they can not only extinguish ordinary fires but also put out fires such as those involving oil, in situations where foam fire extinguishers are ineffective. TulsionA-33 is a crack-free, strongly basic anion exchange resin of L-core grade. A-33 is a specially developed, premium-grade anion exchange resin based on a quaternary ammonium group, featuring excellent physical and chemical stability in the nuclear industry, and is constructed on a polystyrene matrix. In the regenerated form, A-33 exists as a hydroxide; the chloride form ensures that no more than 3% of the exchange sites are occupied. A-33 is primarily used in reactor coolant water and as a regulator in nuclear power plant systems, to keep corrosion products to a minimum and thus prevent scaling and corrosion on heat transfer surfaces. A-33 is also effective for removing boric acid. Its excellent capacity is achieved through stringent quality control measures, ensuring that the ionized form contains minimal metal impurities. Type: Strong-base anion exchange resin; Main structure: Polystyrene copolymer; Functional group: Quaternary ammonium type; Physical form: Wet beads; Ion type: Hydroxide type; Particle size range: 0.3 mm; Maximum uniformity coefficient; Total exchange capacity: 1.0 meq/ml; Moisture content: 70%; Temperature range: 80 degrees; Swelling upon backwashing: 20% conversion from Cl to OH; Particle size: Less than 0.5% at 50 µm mesh; Backwashing density: lbs/ft; pH range: Insoluble in all common solvents.
It’s right to ask when you don’t understand. Bromides are regulated pollution indicators.
Which element is not an indicator for pollution control?
I suggest you search on Baidu by yourself; I’m not here to provide educational information.