Determination of arsenic, antimony, tungsten and molybdenum in silicate materials by epithermal neutron activation and inorganic ion exchange

✍ Scribed by Kenneth W.W. Sims; Ernest S. Gladney

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 646 KB
• Volume: 251
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(91)87150-6

✦ Synopsis

Ion exchange on alumina cohunns was used to determine

As, Sb, W and MO in silicate rock samples. This procedure requires hour-long epithermal neutron irradiations, rapid ion exchange after the rocks have been brought into solution with sodium hydroxide, sodium peroxide fusion and short gamma-ray counts on an intrinsic Ge detector. With this technique the detection limits achieved were 5 ng g-' for As, 10 ng gg' for Sb and W and 50 ng g-' for MO.