Uncertainty Evaluation of Determination of Content Halogen(F-,Cl-,Br-,I-)in Solder Paste by ion Chromatography
The uncertainty of the determination of halogen(F-,Cl-,Br-,I-)content in solder paste by ion chromatography was evaluated.According to the assay for the determination of the JJF 1135-2005 Evaluation of Uncertainty in Chemical Analysis Measurement and JJF 1059.1-2012 Evaluation and Expression of Uncertainty in Measurement,a mathematical model to evaluate and analyze the source of uncertainty for the determination of halogens in solder paste was established.The sources of uncertainty included the preparation of standard solutions,the fitting of calibration curve,the preparation of sample,the balance weighing,the repeatability measurement,and rounding off data,and each component of uncertainty was calculated and synthesized.The accurate assessment of the uncertainty of the content of halogens in solder paste is helpful to control the testing quality of products.
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