AGDB measured parameter: 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

Reference for the analytical method

Author Arbogast, Belinda F., editor
Year 1996
Title Analytical methods manual for the Mineral Resource Surveys Program, U.S. Geological Survey
Series Open-File Report
Issue 96-525
Pages xi, 248 leaves; 28 cm
URL http://pubs.er.usgs.gov/publication/ofr96525
Notes This edition replaces the methods portion of Open-file report 90-668 published in 1990 -- Introduction. Includes bibliographical references.
Organization USGS-BGC

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