【作者】 韦冠一； Adolf.Gtz； 张子斌； 李雪松； H.Gerken；

【Author】 WEI Guan-yi, Adolf. G tz, ZHANG Zi-bin LI Xue-song, H. Gerken (1. Northwest Institute of Nuclear Technology, Xi’an 710613, China; 2. The InProcess Instrument Company, Bremen, Germany)

【机构】 西北核技术研究所； 德国IPI公司 Otto-lilienthal-str.19.28199,Bremen,Germany；

【摘要】 <正> 2003年,西北核技术研究所与德国IPI公司签订合同,共同开发一台气体四极质谱计,合同中含有高精度的校准混和气的供货,校准气中含～1%Ar,～0.5%Ne,～0.1%Kr,～0.1%Xe,其余为高纯N₂,其浓度准确度要求在0.1%左右。更多还原

【Abstract】 The brief procedure of how to get a gas mixture of low concentration and high accuracy with the double balance weighing method was described. This method requires two balances of both different ranges and high resolutions, also tow sets of equipment for introducing Ar, Ne, Kr, Xe, and the Nitrogen for balance gas. Two sets of equipment were fulfilled according to the described procedure without any backflow of the component gases. The residual gas in the filling equipment was analyzed to correct the mass of the component gases filled into the mixture gas. By this way, the concentration of Kr and Xe in the preparing mixture gas, is about 0.1%, with the maximum uncertainty of about 0.1%.更多还原