オートアナライザーを用いた電導度法による洗剤中の炭酸塩の自動定量

概要

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An automated conductometric method for the determination of carbonates in detergents has been developed.<BR>Using Technicon Auto Analyzer II, sample solutions were injected automatically into the continuous flow of acidic solution with air segmentation. The evolved carbon dioxide was introduced into the flow of deionized water, and then detected automatically by electric conductometry. The surface of sample solutions was covered with liquid paraffin to prevent the contamination of carbon dioxide from air.<BR>The range of the determination for sodium carbonate was from 10 to 200mg/<I>l</I> and the proposed method was applied to the determination of carbonates in several commercial detergents. The results agreed with those of conventional gas chromatographic method. The capacity of this method is 30samples/h.
社団法人日本油化学会の論文