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Emission Spectrographic Determination of Selected Metals in Magnesium Alloys by the DC Arc-powder Technique.

Authors
Apsher-AD
Source
Appl Spectr 1978 32(2):212-215
Link
NIOSHTIC No.
10009680
Abstract
A method is presented for the determination of trace quantities of tungsten, tantalum, columbium, molybdenum, vanadium, and chromium in magnesium alloys. In the procedure, the alloys are converted to their sulfates and excited by a 12-amp-dc arc for 70 sec in a graphite electrode. Magnesium sulfate synthetic standards are used. Minimum detectable concentrations ranging from 1 ppm molybdenum and chromium to 20 ppm tungsten and tantalum are indicated. The standard deviations range from 2.9 Ppm for tantalum to 9.9 Ppm for tungsten at the 50-ppm concentration range.
Publication Date
19780101
Document Type
OP;
Fiscal Year
1978
NTIS Accession No.
NTIS Price
Identifying No.
OP 13-78
Issue of Publication
2
NIOSH Division
RORC;
Source Name
Appl. Spectr., V. 32, No. 2, March/April 1978, PP. 212-215
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