USGS - science for a changing world

Mineral Resources On-Line Spatial Data

AGDB measured parameter: W_ppm_ES_Q

Tungsten, 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 W:

Parameter Description
W_ppm_AES_Acid_P Tungsten, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after unknown partial digestion/leach
W_ppm_AES_AR_P Tungsten, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after partial digestion with aqua regia
W_ppm_AES_HF Tungsten, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after HF-HCl-HNO3-HClO4 digestion
W_ppm_AES_IE Tungsten, in parts per million by weight, by inductively coupled plasma-atomic emission spectroscopy after HF-HClO4-HNO3 digestion and ion exchange
W_ppm_CM_HF Tungsten, in parts per million by weight, by colorimetry after multi-acid digestion with HF
W_ppm_CM_ST_P Tungsten, in parts per million by weight, by colorimetry after carbonate flux sinter partial digestion
W_ppm_EDX Tungsten, in parts per million by weight, by energy-dispersive X-ray fluorescence spectroscopy
W_ppm_ES_Q Tungsten, in parts per million by weight, by quantitative direct-current arc emission spectrography
W_ppm_ES_SQ Tungsten, in parts per million by weight, by semi-quantitative visual 6-step or direct reader direct-current arc emission spectrography
W_ppm_MS_AR_P Tungsten, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after partial digestion with aqua regia
W_ppm_MS_HF Tungsten, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after HF-HCl-HNO3-HClO4 digestion
W_ppm_MS_ST Tungsten, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after Na2O2 sinter digestion
W_ppm_MS_ST_REE Tungsten, in parts per million by weight, by inductively coupled plasma-mass spectroscopy after Na2O2 sinter digestion, REE package
W_ppm_NA Tungsten, in parts per million by weight, by neutron activation

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/agdb/parameter.php?parameter=W_ppm_ES_Q
Page Contact Information: pschweitzer@usgs.gov
Page Last modified: 14:44 on 21-May-2014