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AGDB measured parameter: Nb_ppm_CM_HF

Niobium, in parts per million by weight, by colorimetry after multi-acid digestion with HF

Reference for the analytical method

Author Baedecker, Philip A., editor
Year 1987
Title Methods for geochemical analysis
Series Bulletin
Issue 1770
Pages 1 v.: ill.; 28 cm
URL http://pubs.er.usgs.gov/publication/b1770
Notes Includes bibliographies. Analytical methods used in the Geologic Division laboratories of the U.S. Geological Survey for the inorganic chemical analysis of rock and mineral samples.
Organization USGS-BAL

Other parameters measuring Nb

Parameter Description
Nb_ppm_AES_AR_P Niobium, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after partial digestion with aqua regia
Nb_ppm_AES_Fuse Niobium, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after LiBO2 or LiBO2-Li2B4O7 fusion
Nb_ppm_AES_HF Niobium, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after HF-HCl-HNO3-HClO4 digestion
Nb_ppm_AES_IE Niobium, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after HF-HClO4-HNO3 digestion and ion exchange
Nb_ppm_CM_HF Niobium, in parts per million by weight, by colorimetry after multi-acid digestion with HF
Nb_ppm_EDX Niobium, in parts per million by weight, by energy-dispersive X-ray fluorescence spectroscopy
Nb_ppm_ES_Q Niobium, in parts per million by weight, by quantitative direct-current arc emission spectrography
Nb_ppm_ES_SQ Niobium, in parts per million by weight, by semi-quantitative visual 6-step or direct reader direct-current arc emission spectrography
Nb_ppm_MS_AR_P Niobium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after partial digestion with aqua regia
Nb_ppm_MS_HF Niobium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after HF-HCl-HNO3-HClO4 digestion
Nb_ppm_MS_ST Niobium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after Na2O2 sinter digestion
Nb_ppm_MS_ST_REE Niobium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after Na2O2 sinter digestion, REE package
Nb_ppm_WDX_Fuse Niobium, in parts per million by weight, by wavelength-dispersive X-ray fluorescence spectroscopy after LiBO2 or LiBO2-Li2B4O7 fusion