AGDB measured parameter: 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

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 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