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本文主要以氧气公司和林德公司为重点,综合介绍英国和西德在制备标准混合气方面的技术现状、规模和特点。着重介绍两国应用高压重量法配制混合气作为成份量的基准或传递标准,以校准精密的分析仪器的技术条件和技术指标。对建立高压重量法配气技术的各个环节,如纯气的制备与提纯,大质量的精密天平的使用,以及纯气、超纯气和混合气的分析鉴定方法等在两国的技术现状,做了重点介绍。对制备混合气的其它方法,如高压分压法、分级稀释的流量比法、低压静态法等等在两国的应用情况,也做了一般介绍。
This article focuses mainly on Oxygen and Linde companies and provides an overview of the state of the art, scale and characteristics of the UK and West Germany in preparing standard gas mixtures. The emphasis is put on the reference or transmission standards for preparing the mixture gas by the high-pressure gravimetric method in both countries to calibrate the technical conditions and technical specifications of sophisticated analytical instruments. The technical status quo of establishing high-pressure gravimetric gas distribution technology in both countries, such as the preparation and purification of pure gas, the use of high-quality precision balances, and the methods for the analysis and identification of pure gas, ultra-pure gas and gas mixture, Made a key introduction. Other methods for preparing mixed gas, such as high pressure partial pressure, fractional dilution flow ratio method, low pressure static method and so on in the two countries are also made a general introduction.