Quantitative chemical analysis of submerged solids using calibration-free laser-induced breakdown spectroscopy

摘要

The aim of this study is to investigate the application of Calibration-Free Laser-Induced Breakdown Spectroscopy (CF-LIBS) calculations, to determine the composition of metals and minerals submerged in seawater using a long-pulse laser. The compositions of six different brass standard samples submerged in seawater calculated using CF-LIBS showed good agreement with their certified values. For analysis of minerals, we demonstrate the application of CF-LIBS calculations for classification of hydrothermal deposits using a Cu-Pb-Zn diagram. The results suggest that CF-LIBS is applicable for in-situ quantitative analysis of mineral deposits in the marine environment.