LIBS quantitative solution method based on MART multiplicative reconstruction
A quantitative analysis and vector technology, applied in the field of photoelectric detection, can solve problems such as the accuracy of the solution algorithm, and achieve the effect of improving accuracy
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[0041] The object of the present invention is to provide a kind of multivariate LIBS quantitative analysis and solving method, use high-precision optical tomography reconstruction model for multivariate LIBS quantitative solution problem modeling, set up standard sample normalized spectral intensity matrix W, correlation matrix F, The relationship between the standard sample atomic fraction matrix P; using the MART multiplicative iterative algorithm that meets the maximum entropy criterion in optical tomography combined with the column vector decomposition of the matrix, iteratively solves the column vectors of the correlation matrix F column by column, thus obtaining the reflection W Incidence matrix F that is interconnected with P. Then, according to the operation of the measured normalized spectral intensity vector and the correlation matrix of the unknown sample, the high-precision solution analysis of each element in the unknown sample is realized, and the solution accurac...
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