アルミナ管燃焼, 乾式熱分解法による超微量水銀の分析

概要

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A dry method of microquantity mercury analysis with thermal decomposition of general specimens was examined. Thermal decomposition of specimens is carried out in an alumina porcelain boat in a combustion tube. A catalyst is used to obtain complete decomposition of materials. To avoid interfering materials produced through decomposition of specimens, two improvements were made ; (i) the use of additive materials such as CaO and activated Al_2O_3 which suppress the diffusion of interfering materials from their generating origin in the burning specimen, and (ii) cleaning of dirty gas through a water layer and consequent dehydration. By the use of these two methods, the dry thermal decomposition technique becomes applicable to analyse a trace of mercury in general specimens. As a result of this investigation, analysis of a total mercury in a microquantity became an easy operation for specimens such as sea water, waste water, urine, coal tar, and others which were difficult to analyse by the existiny method.
公益社団法人日本薬学会の論文
1977-02-28