Abstract

As a powerful element analysis technique, Laser Induced Breakdown Spectroscopy (LIBS) was widely used in various fields. In this work, a method using LIBS for chromium(Cr) and kalium(K) determination in K2Cr2O7 water solution was evaluated. Eight K2Cr2O7 water solutions were made up containing Cr and K in a range of 50-4000ug/ml.The LIBS spectra of metallic element Cr and K in K2Cr2O7 water solution were collected. The typical spectrum lines of metallic element Cr and K were chosen and identified. Spectral line intensity was enhanced along with the concentration. The lowest detection concentration of 50 ug/ml is achieved for Cr detection and calibration curve was established. The results suggest that it is possible to develop LIBS as an on-line sensor for metal element technique in water.

© 2012 Optical Society of America