Quantitative evaluation system and method for rare earth concentration in water based on ground reflection spectrum

Abstract

The invention discloses a system and method for quantificationally evaluating concentration of rare earth in a water body based on ground reflection spectrum; and on the basis of ground reflection spectrum data, quick quantificational inversion of concentration of rare earth element in the water body can be realized. The system provided by the invention comprises a rare earth water sample collection device, a surface feature spectrometer, an ICP-MS plasma mass spectrometer and a computer; the rare earth water sample collection device is used for collecting tombarthite water samples with different concentrations; the surface feature spectrometer is used for performing ground reflection spectral measurement to the collected rare earth water samples and for analyzing and determining characteristic absorption valley distribution characteristics having indication significance to rare earth concentration; the ICP-MS plasma mass spectrometer is used for performing rare earth element concentration testing to the collected rare earth water samples; and the computer works out the relative absorption depth of a characteristic absorption valley according to the obtained characteristic absorption valley distribution characteristics and establishes the correlation between the relative absorption depth of the characteristic absorption valley and the rare earth element concentration to obtain a quantificational evaluation model of rare earth concentration.

Description

technical field [0001] The invention relates to the field of research on the spectral characteristics of rare earth elements, in particular to a system and method for quantitatively evaluating rare earth concentration in water based on ground reflection spectrum. Background technique [0002] This invention is supported by the special fund for basic scientific research business expenses of central public welfare scientific research institutes "Research on the Quantitative Evaluation of Rare Earth Concentration in Solution Based on Ground Reflection Spectrum" (K1315), the National Natural Science Foundation of China Youth Fund "Solution Based on Reflection Spectrum Absorption Depth" Research on Quantitative Evaluation of Medium Rare Earth Concentration" (41402292), China Geological Survey Geological Survey Project "Remote Sensing Survey and Monitoring of Mine in East China" (1212011220064), China Geological Survey Geological Survey Project "Remote Sensing Investigation of Sout...

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Problems solved by technology

However, there are very few related studies on the spectral characteristics of rare earth elements and the relationship between their chemical properties. The available literature mainly includes the spectra of Eu, Nd, and Sm rare earth oxides measured in the USGS spectral library; Enton Bedini discovered the spectrum of a carbonatite sample containing rare earth oxides in spectral measurements. Because of the Nd element, there are spectral absorption features in the visible light-near infrared bands of 0.58 μm, 0.74 μm, and 0.80 μm.

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