Mineral Resources On-Line Spatial Data

Gold, in parts per million, by graphite furnace-atomic absorption spectrophotometry.

Parameter	Description
AuCV_pct_NA	Gold, coefficient of variance, in percent, by neutron activation.
Au_ppm_AA	Gold, in parts per million, by flame-atomic absorption spectrophotometry.
Au_ppm_AA_GF	Gold, in parts per million, by graphite furnace-atomic absorption spectrophotometry.
Au_ppm_AES_AR	Gold, in parts per million, by inductively coupled plasma-atomic emission spectroscopy after aqua regia digestion.
Au_ppm_AES_HF	Gold, in parts per million, by inductively coupled plasma-atomic emission spectroscopy after multi-acid digestion with HF.
Au_ppm_AES_P	Gold, in parts per million, by inductively coupled plasma-atomic emission spectroscopy after partial digestion/leach.
Au_ppm_ES	Gold, in parts per million, by semi-quant direct-current arc emission spectrography.
Au_ppm_ES_Q	Gold, in parts per million, by quant direct-current arc emission spectrography.
Au_ppm_FA_AA	Gold, in parts per million, by fire assay and flame-atomic absorption spectrophotometry.
Au_ppm_FA_DC	Gold, in parts per million, by fire assay and direct current plasma-atomic emission spectroscopy.
Au_ppm_FA_ES	Gold, in parts per million, by fire assay and quant direct-current arc emission spectrography.
Au_ppm_FA_MS	Gold, in parts per million, by fire assay and inductively coupled plasma-mass spectroscopy.
Au_ppm_MS_HF	Gold, in parts per million, by inductively coupled plasma-mass spectroscopy after multi-acid digestion with HF.
Au_ppm_MS_P	Gold, in parts per million, by inductively coupled plasma-mass spectroscopy after partial digestion.
Au_ppm_NA	Gold, in parts per million, by neutron activation.

Accessibility FOIA Privacy Policies and Notices

U.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/agdb/parameter.php?parameter=Au_ppm_AA_GF
Page Contact Information: pschweitzer@usgs.gov
Page Last modified: 13:42 on 06-Apr-2012