The effect of major components of silicate rocks and minerals, Al, Ca, Fe, K, Mg, and Na, on the common trace elements in a dc arc plasma was investigated by measuring plasma parameters such as volatilization rate, temperature, electron density, and electric field strength in matrices
consisting of SiO2 with and without the major components. Identical behavior of these parameters in the synthetic mixtures and pure SiO2 occurs only in the central portion (≈2 mm) of the arc plasma. Common petrological types of silicates were analyzed against standards
in pure SiO2 for the common trace element assemblage. Internal standards can be discarded, and coefficients of variation of approximately 15% were obtained for all trace elements analyzed.
Nuclear Research Center-Negev, Beer-Sheva, Israel 2:
Geological Survey of Israel, Jerusalem, Israel
Publication date: November 1, 1972
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