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Improving the application of laser-induced breakdown spectroscopy for the determination of total carbon in soils

Title
Improving the application of laser-induced breakdown spectroscopy for the determination of total carbon in soils
Authors
Nguyen H.V.-M.Moon S.-J.Choi J.H.
Ewha Authors
최정현
SCOPUS Author ID
최정현scopus
Issue Date
2015
Journal Title
Environmental monitoring and assessment
ISSN
1573-2959JCR Link
Citation
vol. 187, no. 2, pp. 28
Indexed
SCIE; SCOPUS WOS scopus
Abstract
The increase of atmospheric greenhouse gases such as CO2 has caused noticeable climate change. Since increased CO2 may contribute to carbon storage in terrestrial ecosystems through the CO2 cycle between the atmosphere and vegetation, it is necessary to improve methods for measuring C in soil. In this study, we determined the total carbon concentrations of soils using a highly sensitive and rapid method, laser-induced breakdown spectroscopy. The presence of C has been measured by detecting signal at the wavelength of 247.86 nm. The obstacle of Fe interference at the C measurement wavelength of 247.86 nm was reduced by selecting the optimal delay time of 1.4 μs. The ratio of peak intensities (areas) at 247.86 nm for C and 248.20 nm for Fe was then successfully applied to the calibration curve. In addition, to dismiss the problem of measuring the C lines at 247.86 nm, 193.03 nm has been used to observe C emission. Both the 193.03- and 247.86-nm lines provided significant linear calibrations. The 193.03-nm lines presented stronger relative accuracies in predicting the lower C concentrations of the unknown samples than that one at 247.86 nm.
DOI
10.1007/s10661-015-4286-z
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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