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http://dx.doi.org/10.5806/AST.2009.22.2.141

Investigation of the optimum condition for the quantitative analysis of Cu sample by Laser induced breakdown spectroscopy  

Kim, Seunghyun (Korea Atomic Energy Research Institute)
Shin, Heesung (Korea Atomic Energy Research Institute)
Ju, Junesik (Korea Atomic Energy Research Institute)
Kim, Hodong (Korea Atomic Energy Research Institute)
Publication Information
Analytical Science and Technology / v.22, no.2, 2009 , pp. 141-147 More about this Journal
Abstract
A laser induced breakdown spectroscopy (LIBS) measurement was carried out to derive an optimized measurement condition with a high reproducibility and to grow a plasma sphere to 20 mm high under a 600 mtorr vacuum in order to improve an accuracy of measurement. The measurement of the plasma was taken at a 6.0 mm distance, in the direction of a plasma sphere, from a sample. This location belongs to the outer sphere region in the plasma. The calibration curve of 'Ni' and 'Cu' was acquired by the signal intensity ratio and the atomic ratio for the samples, and linear regression of 'Cu' was $R^2$=0.9886, and the linear regression of 'Ni' was $R^2$=0.9988. The accuracy of LIBS was improved pre-existence as the measurement error of 'Ni' was 0.78%.
Keywords
LIBS (laser induced breakdown spectroscopy); Quantitative analysis; Atomic spectroscopy; Analytical instruments;
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