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- W2360709252 abstract "The contents of two levels of lead in Sn-Ag-Cu system solder for CCQM comparisons were determined by isotope dilution mass spectrometry(IDMS)after the samples were mixed with 207Pb spike and digested by H2 O2-HF in PTFE vessel.H2 O2-HF digestion system avoided forming silver chloride andβ-stannic acid when using conventional nitric acid and hydrochloric acid for Sn-Ag-Cu solder,and saved the digestion time.Matrix effects on 208Pb/207Pb ratio determination and the resulting Pb contents in solder were discussed,and the result shows matrix effect was reduced by selecting the appropriate dilution factor in the case of guaranteed precision.Established accurate determination method for high and low level of lead in Sn-Ag-Cu system solder,the uncertainty of the measurement was also analyzed and evaluated.The good degree of equivalence of CCQM-P119and CCQM-K88indicates IDMS has good accuracy and small uncertainty compared with traditional methods,itvalidate reliability of this method.The established IDMS method is suitable for the certification of similar solder reference materials." @default.
- W2360709252 created "2016-06-24" @default.
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- W2360709252 date "2014-01-01" @default.
- W2360709252 modified "2023-09-26" @default.
- W2360709252 title "Determination of Lead in Sn-Ag-Cu Solder for CCQM Comparisons by IDMS" @default.
- W2360709252 hasPublicationYear "2014" @default.
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