AGDB measured parameter: Th_ppm_MS_HF

Thorium, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after HF-HCl-HNO3-HClO4 digestion

Reference for the analytical method

Author Taggart, Joseph E., editor
Year 2002
Title Analytical methods for chemical analysis of geologic and other materials, U.S. Geological Sur
Series U.S. Geological Survey open-file report 02-223
URL http://pubs.usgs.gov/of/2002/ofr-02-0223/
Notes Title from PDF title screen (viewed on Oct. 21, 2003). Updates Open-file report 96-525. Includes bibliographical references. Mode of access: Internet. System requirements: Adobe Acrobat Reader (available free).
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