办事指南

Warning light

点击量:   时间:2019-03-07 12:05:01

By Harvey Black WORKERS dealing with toxic elements can get immediate warnings of dangerous leaks, thanks to an air monitoring device developed at the Los Alamos National Laboratory in New Mexico. The monitor uses microwaves to turn sampled air into a hot plasma. The plasma emits light, which is fed to a detector that identifies pollutants by the wavelengths they emit. The concentrations of these pollutants are then read on a computer. The monitor was developed to pick up beryllium, a toxic metal used in nuclear weapons manufacture. “When you work with beryllium today,