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The Comparison and Research of Several Pretreatment Techniques on the Determination of Trace Elements in 4,4′-Dihydroxybenzophenone by Atomic Absorption Spectrometry

FENG Xue-song;ZHAO Yu;College of Chemistry and Molecular Sciences,Wuhan University;  
Herein,three pretreatment techniques including dry cineration,microwave digestion,and choline dissolution were compared for the determination of trace elements including K,Na,Ca,Fe,Mg,and Al in 4,4-dihydroxybenzophenone by flame atomic absorption spectrometry.It was found that there were no apparent differences in the results obtained by the three methods,but the result from the dry cineration was a little bit lower than those from the other methods.The recovery rates of the three methods were in the range of 88.1%-105.6%,with RSDs of 1.3%-3.5%.
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