AGDB measured parameter: Na2O_pct

Author	Taggart, Joseph E., editor
Year	2002
Title	Analytical methods for chemical analysis of geologic and other materials, U.S. Geological Survey
Series	U.S. Geological Survey Open-File Report
Issue	02-223
URL	http://pubs.er.usgs.gov/publication/ofr02223
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

Parameter	Description
Na2OCV_pct_NA	Sodium, as sodium dioxide, coefficient of variance, in percent, by neutron activation.
Na2O_pct_AA	Sodium, as sodium dioxide, in weight percent, by flame-atomic absorption spectrophotometry.
Na2O_pct_AA_FE	Sodium, as sodium dioxide, in weight percent, by flame emission spectrophotometry.
Na2O_pct_AES_AR	Sodium, as sodium dioxide, in weight percent, by inductively coupled plasma-atomic emission spectroscopy after aqua regia digestion.
Na2O_pct_AES_HF	Sodium, as sodium dioxide, in weight percent, by inductively coupled plasma-atomic emission spectroscopy after multi-acid digestion with HF.
Na2O_pct_AES_SF	Sodium, as sodium dioxide, in weight percent, by inductively coupled plasma-atomic emission spectroscopy after sinter or fusion digestion.
Na2O_pct_ES	Sodium, as sodium dioxide, in weight percent, by semi-quant direct-current arc emission spectrography.
Na2O_pct_ES_Q	Sodium, as sodium dioxide, in weight percent, by quant direct-current arc emission spectrography.
Na2O_pct_MS_HF	Sodium, as sodium dioxide, in weight percent, by inductively coupled plasma-mass spectroscopy after multi-acid digestion with HF.
Na2O_pct_NA	Sodium, as sodium dioxide, in weight percent, by neutron activation.
Na2O_pct_WDX	Sodium, as sodium dioxide, in weight percent, by wavelength-dispersive X-ray fluorescence spectroscopy.

AGDB measured parameter: Na2O_pct_NA