Analysis of geochemical and mineral compositions of volcanic soil affected by Merapi eruption in Central Java Indonesia using laser-induced breakdown spectroscopy with calibration-free.
Ali Khumaeni, Rina Dwi Indriana, Felix Jonathan, Dian Fiantis, Frisa Irawan Ginting, Nasrullah Idris, Hendrik Kurniawan
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Abstract
Volcanic materials are crucial for the rejuvenation process as they positively influence agricultural factors by progressively enhancing soil fertility. In this study, the quantification of geochemical and mineral constituents of Merapi volcanic soil was carried out to assess its substantial influence on enhancing soil fertility using laser-induced breakdown spectroscopy (LIBS) technique via a calibration-free approach. The volcanic soil samples were obtained from 24 locations in the Merapi volcano in Central Java Indonesia. In the experiment, a pulse Nd:YAG laser (1064 nm, 83 mJ, 10 ns) was experimentally directed and focussed on the samples to generate a luminous plasma containing the elemental makeup of the samples. The volcanic soil in all directions contained the same elements with different concentrations for each sampling location. The volcanic soil contains major elements of Si, Ca, Fe, Al, and K and minor elements of P, Ti, Mn, Cu, and Zn. The soil of Merapi volcano contains a total of 13 oxides, including three elemental oxides from the silicate mineral framework (SiO2, Al2O3, Fe2O3), five essential macronutrients for plant growth (CaO, MgO, K2O, SO3, P2O5), five micronutrients for plant growth (MnO, CuO, ZnO, Cl, Br), and two total oxide elements from rare earth elements (Y2O3 and Eu2O3). The results of the LIBS method demonstrate a substantial concordance with the findings obtained from the conventional X-ray fluorescence (XRF) technique.
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Talanta provides a forum for the publication of original research papers, short communications, and critical reviews in all branches of pure and applied analytical chemistry. Papers are evaluated based on established guidelines, including the fundamental nature of the study, scientific novelty, substantial improvement or advantage over existing technology or methods, and demonstrated analytical applicability. Original research papers on fundamental studies, and on novel sensor and instrumentation developments, are encouraged. Novel or improved applications in areas such as clinical and biological chemistry, environmental analysis, geochemistry, materials science and engineering, and analytical platforms for omics development are welcome.
Analytical performance of methods should be determined, including interference and matrix effects, and methods should be validated by comparison with a standard method, or analysis of a certified reference material. Simple spiking recoveries may not be sufficient. The developed method should especially comprise information on selectivity, sensitivity, detection limits, accuracy, and reliability. However, applying official validation or robustness studies to a routine method or technique does not necessarily constitute novelty. Proper statistical treatment of the data should be provided. Relevant literature should be cited, including related publications by the authors, and authors should discuss how their proposed methodology compares with previously reported methods.
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