Direct Analysis of Powder Analysis Using TEA CO2 Laser-Induced Metal- Assisted Gas Plasma at 1 Atm

Abstract

In Laser-induced breakdown spectroscopy (LIBS), powder is difficult sample due to the occurrence of blowing-off. In order to overcome this problem, we offer a novel technique for the direct analysis of powder by utilizing a specific characteristics of a TEA CO2 laser. The detail mechanism will be described in the paper. Using this technique, a quantitative analysis was made using a commercial powder contain Cr with a detection limit of about 0.5 ppm. This technique has a possibility to realize highly sensitive analysis of elements in powder and can directly be applied for automatic monitoring system.