摘要: Large quantities of nitrogen tetraoxide and hydrazine compounds will be used in space shuttle operations. These materials are toxic, and the nearby environment must be monitored for escaped fuels at concentrations of a few parts p... 展开 Large quantities of nitrogen tetraoxide and hydrazine compounds will be used in space shuttle operations. These materials are toxic, and the nearby environment must be monitored for escaped fuels at concentrations of a few parts per billion. Based on an analytical method prototype portable monitors have been built and evaluated. The instruments meet design criteria and should be satisfactory for NASA's intended purpose. 收起