利用激光诱导击穿光谱分析土壤成份
Laser-induced breakdown spectroscopy for analysis of soil elements
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摘要: 搭建了一套激光诱导击穿光谱实验装置，并通过配置特定样品，开展了一系列激光诱导击穿光谱探测实验。根据含有不同质量分数的同种元素样品的激光诱导击穿光谱实验结果，获得元素质量分数与谱线强度的关系曲线(定标曲线)。对中南民族大学附近的土壤进行激光诱导击穿光谱实验，发现土壤中含有Mg,Ca,Na等18种元素，对河南云台山茱萸峰岩石的激光诱导击穿光谱实验结果仅获得Fe,Mg,Ca 3种金属元素。比较这2种实际样品的激光诱导击穿光谱结果表明，检测样品的物理结构影响激光诱导光谱的实验结果。Abstract: A laser-induced breakdown spectroscopy(LIBS) set-up has been established, and a series of experiments have been carried out with soil samples. The calibration curves of the lines intensities versus the mass fraction of the elements were acquired by the experiment. Eighteen elements including Mg, Ca and Na were found in the sample of the soil around the South-Central University for Nationalities by qualitative analysis. Only three elements, Fe, Mg and Ca, were found in the rock at Zhuyufeng peak. These results indicate that the physical composition of soil sample impact on the precision of LIBS.
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Key words:
- laser-induced breakdown /
- spectroscopy analysis /
- soil element /
- elemental analysis /
- rock
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