De viktigaste användningarna av ultrapure -gaser

The variety of ultrapure gases has developed very rapidly. In 1981, there were more than 120 types of single ultrapure gases and about 300 types of mixed ultrapure gases in 12 categories. China can produce more than ten types of single ultrapure gases and dozens of mixed ultrapure gases. In addition to the main varieties listed in the table, single ultrapure gases also include sulfur dioxide, carbon monoxide, carbon dioxide, ethylene, n-butane, arsine, propadiene, cis-butylene, butadiene, etc. Mixed ultrapure gases are mixed gases of the above single ultrapure gases, each of which has a special purpose, such as pure argon-nitrogen mixed gas used for the reduction of tungsten filaments in electric light Källor, ren argon-neon blandad gas, argon-helium blandad gas som används för neonlampa inflation, etc. . Det finns också många ultrapure blandade gaser som används som standardgaser i kromatografi, masspektrometri och spektralanalys .}