Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7674086 | Spectrochimica Acta Part B: Atomic Spectroscopy | 2016 | 55 Pages |
Abstract
We investigate the possibility of on-site multi-element analysis of part-per-million order Cu2Â + and Zn2Â + in an aqueous solution by underwater laser-induced breakdown spectroscopy (underwater LIBS) of a Pt electrode on which Cu2Â + and Zn2Â + are electrodeposited in advance. Atomic emission lines of Cu and Zn are simultaneously observed. To apply a calibration-free LIBS (CF-LIBS) approach to the present system, we estimate the Zn/Cu ratio in the laser ablation plasma from the emission spectra. Although the Zn/Cu ratio in the deposit agrees with the ratio in the solution, the ratio in the plasma considerably deviates from the ratio in the deposit. We demonstrate the possibility of quantitative analysis even in such a case by correcting the deviation using a simple model considering heat propagation and thermal evaporation during liquid-phase laser ablation.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Ayumu Matsumoto, Ayaka Tamura, Ryo Koda, Kazuhiro Fukami, Yukio H. Ogata, Naoya Nishi, Blair Thornton, Tetsuo Sakka,