GB/T 6150.15-2023 Methods for chemical analysis of tungsten concentrates - Part 15: Determination of bismuth content by hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry (English Version)
2023GB/T 6150.15-2023 Methods for chemical analysis of tungsten concentrates - Part 15: Determination of bismuth content by hydride generation atomic fluorescence spectrometry and flame atomic absorption spectrometry
2022GB/T 6150.13-2022 Methods for chemical analysis of tungsten concentrates—Part 13:Determination of arsenic content—Atomic fluorescence spectrometry and the silver diethyldithiocarbamate(DDTC-Ag)spectrophotometry
2008GB/T 6150.13-2008 Methods for chemical analysis of tungsten concentrates.Determination of arsenic content.Hydride reduction atomic absorption spectrometry and the silver diethyldithiocarbamate(DDTC-Ag) photometry
1985GB/T 6150.15-1985 Methods for chemical analysis of tungsten concentrates--The silver diethyldithiocarbamate photometric method for the determination of arsenic content