What are the advantages and disadvantages of carbon monoxide and carbon dioxide?
Carbon monoxide is a common poison, but trace use is good for organ transplants. British researchers have recently developed a new method that can effectively use carbon monoxide to help transplant organs survive, while avoiding the risk of carbon monoxide poisoning. Excessive inhalation of carbon monoxide poisoning will lead to death, carbon monoxide into the human body, and soon the hemoglobin in blood combined with the formation of carboxyhemoglobin, causes red blood cells to reduce the oxygen carrying, the tissue hypoxia in vivo. The cardiac and central biblical system is the most sensitive to hypoxia and the earliest affected. In the air of carbon monoxide concentration reached 117 mg / M 3, people can feel headache, vertigo: up to 292.5 mg / M 3 symptoms; up to 582.5 mg / M 3 will be nausea and vomiting, exhaustion, if not timely rescue can have life risk. When the concentration of carbon monoxide in the air reaches 11700 mg / M 3, a coma occurs; the concentration of carbon monoxide in the air reaches 1170 mg / m. The 3 spoons will soon die. This is bad. But in organ transplant operations, the use of trace amounts of carbon monoxide helps dilate blood vessels and reduce inflammation, thereby increasing the survival rate of transplanted organs.
But traditional carbon monoxide inhalation has the risk of poisoning patients and medical staff by accidental inhalation of high doses of carbon monoxide. That's the advantage. Carbon dioxide is an essential ingredient in plant photosynthesis, and its increase in content is beneficial to the growth of plants. Carbon dioxide can be used as fertilizer to grow crops in greenhouse vegetables. In addition, carbon dioxide can be used as a source of oxygen in diving and aviation. Liquid carbon dioxide has a broad application prospect, the liquid carbon dioxide as extraction medium of naturally occurring compounds from certain plants or plant sources, not only does not damage the bioactive substances contained in the raw material, and the product does not contain residual medium, method for spraying liquid carbon dioxide to the airport in two fog, mist removal efficiency of hundreds of times higher than that of solid carbon dioxide.
Using carbon dioxide instead of traditional organic solvents to spray paint can effectively reduce the amount of harmful substances released into the atmosphere during the process of spraying. In the high-tech, carbon dioxide has its use for laser treatment using carbon dioxide instead of helium neon, can reduce the pain of patients, and save the cost for carbon dioxide extraction of egg yolk lecithin, considerable economic benefit. Carbon dioxide can be used to wash clothes, and does not pollute the environment, but also a wide range of sources. These are all benefits. The downside is the increased carbon dioxide caused by the greenhouse effect, resulting in the polar melting glaciers, rising sea levels, threatening the coastal city, the land salinization of coastal areas, increasing the difficulty of development, increasing temperature also makes the melting of snow in some of the top of the hill, the snow melt water resources of river water to reduce or even stop the phenomenon to occur, the affected area production activities. The increase of the atmospheric temperature, resulting in carbon dioxide absorption in some marine algae wantonly breeding, resulting in the death of algae absorb carbon dioxide, indirectly affect the fishery breeding, and the carbon dioxide in the atmosphere increases toward the vicious spiral. Take | enthusiastic users on 2013-11-09 12:52
