Transactions of the INDIAN CERAMIC SOCIETY Vol. 48 1989
Spectrophotometric Determination of Silica in Barium
Titanate and Zirconia Ceramics after Extraction
of Silicomolybdate on Polyurethane Foam
DIPALI KuNDU AND S. K. Rov
Pages : 47-49
DOI : 10.1080/0371750X.1989.10822943
Abstract
A spectrophotometric method has been developed for the determination
of trace amounts of silica in barium titanate and zirconia ceramics
based on the formation of molybdosilicic acid, its preconcentration
on polyurethane foam, elution in acetone (acetone: HCI = 99: 1)
and reduction to molybdenum blue form. The method is applicable
up to 2 p.g Si/ml. The minimum that was detected by this method was
5.0 ng Si/ml. The method yielded agreeable results.
