METHOD FOR MEASURING TRACE ELEMENT IN SAMPLE AND METHOD FOR INHIBITING COPRECIPITATION OF TRACE ELEMENT AND FLUORIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for precisely analyzing the concentration of a trace element such as zirconium, niobium, hafnium, tantalum contained in rock containing calcium.;SOLUTION: A fluorite is inhibited from being formed by implementing hydracid decomposition after alminum is added to a rock sample. The trace element can be measured by inhibiting the coprecipitation of zirconium, niobium, hafnium and tantalum.;COPYRIGHT: (C)2005,JPO&NCIPI