Identification of nickel emission lines using Nd:YAG laserinduced breakdown spectroscopy

Abstract

Identification of nickel element (Ni) is necessary in various fields including agriculture, mining, and industries. In this study, rapid identification of nickel metal in was made by using laser-induced plasma spectroscopy method. Experimentally, a pulse laser beam (Nd:YAG laser, 1064 nm) was focused on a sample target to initiate a plasma. The plasma emission was detected by optical multichannel analyzer system to obtain the emission spectrum from the sample target. The target used was pure nickel metal plate and Indonesian currency coin containing Ni. The results show that the Ni lines can clearly be detected from the Ni plate at the wavelengths of neutral Nickel (Ni I) at wavelength of300.363, 305.432, 310.188, 313.411, 341.348, 345.289, 351.977, 356.637, 351.977, 356.637, 361.939, and 778.894 nm for neutral Ni lines and at the wavelength of 337.897 nm for ionic Ni line. It was also demonstrated that the Ni emission lines at the same wavelength in the Ni metal plate was also detected from the other sample of currency coin containing Ni. This certified that the present can be used to identify Ni emission in metal sample containing Ni.