Spectrographic Determination of Eleven Trace Impurities in High Purity Cadmium
作者:
P.S. Murty,
V.H. P. Kaimal,
期刊:
Analytical Letters
(Taylor Available online 1979)
卷期:
Volume 12,
issue 12
页码: 1249-1258
ISSN:0003-2719
年代: 1979
DOI:10.1080/00032717908067915
出版商: Taylor & Francis Group
关键词: Cadmium;Spectrographic analysis.
数据来源: Taylor
摘要:
Eleven trace impurities are determined in high purity cadmium by employing d. c. arc emission spectrographic technique. Cadmium ie converted t o its oxide and ground with high purity conducting graphite powder which acts as a buffer. Forty milligrammes of the above mixture is excited in a d. c. arc set at 12 amperes. The spectra of the sample and synthetic standards are photographed on a Jarrell-Ash 3.4 meter Ebert plane grating spectrograph in the region 2175 - 3425 A using a 1200 lines per mm grating in the first order. The detection limits obtained range from 1 to 10 ppm for different elements. The average coefficient of variation ranges from 8.0 to 15.7% for the impurities.
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