遠心沈澱法による食塩の迅速分析

概要

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We tried a gravimetric method using centrifuge instead of volumetric methods using centrifuge for rapid analysis of salt. This method can be summerized as follows: The sample solution is added with precipitants in a 15ml centrifugal tube and the formed precpiitate is separated by the centrifuge from the supernatant liquid. The liquid is thrown out, then distilled water is added. After vigorous stirring, the centrifugal precipitating operation is carried out and the precipitate is washed similarly with alcohol and ether respectively. Finally, the precipitate is separated by the centrifuge, dried and weighed with the tube. We applied these procedure for the analysis of insoluble matters, Cl-,SO42-, Ca2+, Mg2+, K+ and Na+ in common salt, and compared the results with that of the official method of Japan Monopoly Corporation, and found that our method is practically applicable for the rapid analysis of common salt, brine or bittern.
日本海水学会の論文