“…5,11) The utilization of these methods has been reported often for direct analysis of total composition of steels, [1][2][3][4][5]11,14) ceramics and rocks 7,9,10,16) and for determination of element segregation in minerals and rocks. 6,8,12,13,15,16) Mochizuki et al, 3) Akiyoshi et al 4) and Ishibashi 5,11,14) investigated the favorable condition of the laser ablation in detail, and applied LA-ICP-AES to the in-situ analysis of steel matrix in steelmaking plant.…”