発光分光分析による水銀法食塩電解工程における廃泥中の水銀の定量

概要

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Emission spectrographic analysis by the AC arc powder method was examined in order to find a simple method for the determination of mercury in brine purification mud. The volatilization rate of mercury which depends on the sample composition, could be regulated in a good level by using graphite powder as the diluent.The most suitable carrier which gives the highest sensitivity was found to be Ag2O. From the experimental results above mentioned, a recommendable operating condition is as follows;the sample is mixed with a suitable amount of graphite powder and Ag2O, put into a carbon neck electrode, and then excited by an AC arc of 30 volts and 7 amperes for 20 seconds.The use of Hg I 2536.5Å/Ge I 2533.2Å line pair as the analytical lines is satisfactory.The concentration of Hg to which the present method is applicable is 0.05-1.5%. This method seems to be suitable for routine analysis in a manufactory.
社団法人日本分光学会の論文