Re_ppm_ES_Q |
Rhenium, in parts per million by weight, by quantitative direct-current arc emission spectrography |
Re_ppm_ES_SQ |
Rhenium, in parts per million by weight, by semi-quantitative visual 6-step or direct reader direct-current arc emission spectrography |
Re_ppm_FA_MS |
Rhenium, in parts per million by weight, by NiS fire assay and inductively coupled plasma-mass spectroscopy |
Re_ppm_MS_AR_P |
Rhenium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after partial digestion with aqua regia |
Re_ppm_MS_HF |
Rhenium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after HF-HCl-HNO3-HClO4 digestion |