研究目的
Investigating the therapeutic effects of a specific herbal medicine on a particular disease.
研究成果
The study concluded that calibration-free laser-induced breakdown spectroscopy (CF-LIBS) can effectively be utilized for precise determination and quantification of major and minor elements in dolomite, with SEM-EDS and EPMA providing supportive cross-validation. The results demonstrated the complementary nature of these analytical techniques for the compositional analysis of carbonate minerals.
研究不足
The study acknowledges the challenges in precise determination of Mg content in dolomite due to the presence of different phases with varying Mg contents. The techniques used, while effective, have their own limitations in terms of sample preparation and analysis conditions.
1：Experimental Design and Method Selection:
The study used laser-induced breakdown spectroscopy (LIBS) for qualitative and quantitative analysis of dolomite, alongside X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), and electron-probe microanalysis (EPMA).
2：Sample Selection and Data Sources:
A natural carbonate mineral dolomite was analyzed. The sample was crushed, milled, and pressed into pellets for LIBS experiment.
3：List of Experimental Equipment and Materials:
Equipment included a Q-switched Nd:YAG laser system, LIBS 2000+ spectrometer, Bruker AXS advanced D8 discover XRD machine, JEOL JSM 5910 SEM, and Cameca SX-100 electron microprobe.
4：Experimental Procedures and Operational Workflow:
The LIBS setup involved ablating the dolomite target with a laser, recording emission spectra, and analyzing them. XRD, SEM-EDS, and EPMA were used for cross-validation.
5：Data Analysis Methods:
Plasma temperature and electron number density were calculated using Boltzmann plot and Saha–Boltzmann plot methods, and Stark broadening line profile method, respectively.
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