QUANTITATIVE-DETERMINATION OF TRIETHANOLAMINE IN CEMENTS

A new analysis method for the quantitative determination of triethanol amine (TEA) in the aqueous phase of cements was developed. TEA was con verted into the TEA-Fe3+ complex by treating it with 1M NaOH and 10% F e3+ solutions. This method was based on the determination of the TEA-F e3+ complex by polarographic techniques. The TEA content in the aqueou s phase of the tricalcium aluminate-gypsum system was analysed using t he analysis method and the amount of TEA adsorbed was found to be appr oximately 1.5mg per g of the solid phase.