Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Fire-assay Emission Spectrographic Method for Platinum, Palladium, Rhodium, and Gold.

Authors
Whitehead-AB; Heady-HH
Source
Appl Spectroscopy 1970 24(2):225-228
Link
NIOSHTIC No.
10010180
Abstract
A method has been developed for the determination of microgram levels of pt, pd, rh, and au. A 10-mg ag bead containing the precious metals, as extracted by fire assaying, is arced at 10 a DC in graphic electrodes in the presence of 10 mg of either rh or pt metal powder. The matrix elements, ag and pt, or rh, serve as internal standards, and intensity ratios pt/rh or rh/pt, pd/rh, and au/ag are determined. Precision of the method is about +/-5 percent coefficient of variation for pt and rh, +/-15 percent for pd, and +/- 19 percent for au. Limits of detection are below 1 ug, giving analysis limits (for a 1-assay-ton sample) of about 1 to 30 parts per billion for these precious metals.
Publication Date
19700101
Document Type
OP;
Fiscal Year
1970
NTIS Accession No.
NTIS Price
Identifying No.
OP 104-70
Issue of Publication
2
NIOSH Division
SLRC;
Source Name
Appl. Spectroscopy, V. 24, No. 2, March/April 1970, PP. 225-228
TOP