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Determination of Thorium and Total Rare Earths in Monazite Sand with Fluoride Electrode
Author(s) -
Chang FuChung,
Tsai HuiTuh,
Wu ShawChii
Publication year - 1975
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.197500041
Subject(s) - monazite , thorium , chemistry , fluoride , lanthanum , electrode , radiochemistry , titration , inorganic chemistry , lutetium , yttrium , metallurgy , uranium , geochemistry , geology , materials science , zircon , organic chemistry , oxide
A new method has been proposed to determine the total rare earths and thorium in monazite sand with fluoride electrode. The total amount of thorium and rare earths could be determined by back‐titration with standard lanthanum solution in excess fluoride, and the rare earths were titrated directly with fluoride from separate sample. Fluoride electrode was used as indicator electrode. Precision and accuracy were improved by Gran's plot technique.