Patent ID: 9121756
Filing Date: 2015-09-01
Classification: G01J,G01N

Abstract:
1. A method for improving the precision of element measurement based on laser-induced breakdown spectroscopy, comprising: press-forming a sample to be measured with a tablet press; making a cavity on a surface of the sample; forming a layer of aerosol immediately above the surface of the sample to be measured with the components of the layer of aerosol completely identical to those of the sample; testing the sample by using a laser-induced breakdown spectroscopic system, so as to obtain the intensities of the characteristic spectral lines of a target element in the sample; determining the concentration of the target element in the sample to be measured according to a calibration curve of the target element in a set of prepared calibration samples; wherein the calibration curve of the target element in the calibration samples is obtained by fitting a plurality of data pairs constituted by the intensities of the characteristic spectral lines of the target element in a plurality of calibration samples and the mass concentrations of the target element in the samples.