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Abstract
A new approach to allow detection of Cl emission using atransversely excited atmosphere (TEA) carbon dioxide (CO2) laser-induced breakdown spectroscopy (LIBS), namely utilization of a metal sub-target, was introduced. The Cl sample was prepared from pure chemical powder in the form of a solutiondeposited on the metal sub-target. A zinc selenium lens was used to focus the CO2 laser beam (10.6Mm, 2.5 J, 10 Hz, 200 ns) onto the deposited sample under the surrounding gas of helium (pressure of 1 atm) for generated luminous plasma. An optical multichannel analyzer (OMA) system was used for collecting plasma and acquiring the emission spectrum. It was found that luminous plasma can be produced upon focusing the laser irradiation onto the deposited layer of the sample on the subtarget metal while leaving no ablation from the sub-target metal. Many ionic emission lines from Cl can be detected in the visible region.The ionic emission lines occur withfavorable spectrochemical features, namely strong emission intensity and low background level. Thus, this new approach is promising for conducting Cl analysis using a CO2 LIBS.
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Details
1 Graduate School of Mathematics and Applied Sciences, UniversitasSyiah Kuala, Banda Aceh 23111, Aceh, Indonesia
2 Department of Chemistry, Faculty of Mathematics and Natural Sciences, Syiah Kuala University, Jl. SyechAbdurrauf No. 3 Darussalam, 23111 Banda Aceh, Aceh, Indonesia
3 Department of Science and Mathematics Education, Science Education, Faculty of Education, University of Fukui 3-9-1, Bunkyo, Fukui 910-8507, Japan
4 Department of Physics, Faculty of Education, University of Fukui 3-9-1, Bunkyo, Fukui 910-8507, Japan
5 Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Darussalam, Banda Aceh 23111, Indonesia