反射分光光度法によるボイラー水の全鉄の簡易迅速分析

概要

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In order to obtain the sufficient precision applying the reflection-spectrophotometry for the determination of total iron contents in boiler water, the following procedure has been developed.<BR>After the acid-digestion of sample water and the addition of ammonia water, the sample solution containing colloidal precipitates is filtered by using the Millipore membrane, followed by the desiccation under a proper condition. By this filtering procedure, diverse ions can be eliminated and iron is shown to be recovered nearly completely.<BR>The degree of staining of the above membrane is measured by the reflection-spectrophotometric method at 320 mμ. The reproducibility of the analysis is shown to be as good as the one by the spectrophotometric methods in the concentration range of 53, 000 ppb. The proposed procedure will be applicable to the rapid monitoring of total iron contents in boiler water, especially in the case of starting or clean-up operation of boiler.
社団法人日本分析化学会の論文