Discussion on the calibration method and uncertainty evaluation of portable laser induced breakdown spectrometer
This article introduces the working principle of a laser induced breakdown spectrometer.In re-sponse to the current situation of blank national metrological technical specifications for this instrument,combined with the characteristics and usage needs of the instrument,the calibration methods for instru-ment indication error,indication repeatability,stability,and detection limit are provided by taking Cu,Mg,Si,Fe,Mn and Zn elements in certified reference materials for aluminum alloy spectral analysis and pure aluminum spectral analysis reference materials as examples.Based on a large number of experi-ments,the metrological performance requirements for the above calibration items have been provided,and the evaluation method for the uncertainty of instrument indication error has been provided.This cali-bration method provides a technical basis for the traceability of laser induced breakdown spectrometers to some extent,and has a certain reference value.
NETL
NSTL
万方数据
