AGDB measured parameter: Th_ppm_ES_Q

Thorium, in parts per million by weight, by quantitative direct-current arc emission spectrography

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 Th

Parameter Description
Th_ppm_AES_HF Thorium, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after HF-HCl-HNO3-HClO4 digestion
Th_ppm_CM_HF Thorium, in parts per million by weight, by colorimetry after multi-acid digestion with HF
Th_ppm_DN Thorium, in parts per million by weight, by delayed neutron counting
Th_ppm_EDX Thorium, in parts per million by weight, by energy-dispersive X-ray fluorescence spectroscopy
Th_ppm_ES_Q Thorium, in parts per million by weight, by quantitative direct-current arc emission spectrography
Th_ppm_ES_SQ Thorium, in parts per million by weight, by semi-quantitative visual 6-step or direct reader direct-current arc emission spectrography
Th_ppm_MS_AR_P Thorium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after partial digestion with aqua regia
Th_ppm_MS_HF Thorium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after HF-HCl-HNO3-HClO4 digestion
Th_ppm_MS_ST Thorium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after Na2O2 sinter digestion
Th_ppm_MS_ST_REE Thorium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after Na2O2 sinter digestion, REE package
Th_ppm_NA Thorium, in parts per million by weight, by neutron activation
Th_ppm_WDX_Fuse Thorium, in parts per million by weight, by wavelength-dispersive X-ray fluorescence spectroscopy after LiBO2 or LiBO2-Li2B4O7 fusion