GB/T 1819.7-2017 Methods for chemical analysis of tin concentrates—Part 7:Determination of bismuth content—Flame atomic absorption spectrometric method (English Version)
2017GB/T 1819.7-2017 Methods for chemical analysis of tin concentrates—Part 7:Determination of bismuth content—Flame atomic absorption spectrometric method
2004GB/T 1819.7-2004 Methods for chemical analysis of tin concentrates Determination of bismuth content-Flame atomic absorption spectrometric method
1979GB/T 1826-1979 Determination of bismuth content in tin concentrates--Dithiodiantipyryl methane photometric method