Multi-component analysis in solution using piezoelectric quartz sensors: Part II. Determination of aspirin and salicylic acid in aqueous solutions
作者： Wanzhi Wei , Lihua Nie , Shouzhou Yao
DOI: 10.1016/0003-2670(92)85428-9
关键词:
摘要: Based on the linear relationship between conductivity of an aqueous solution and piezoelectric quartz sensor frequency, it was derived that under certain experimental conditions frequency shift should show a dependence concentration for common acids aspirin. This verified experimentally. A calibration model simultaneous determintaion aspirin (ASA) salicylic acid (SA) established. The usefulness technique evaluated by analysis mixtures known composition using P-matrix method. average relative errors were 0.81% ASA 1.63% SA.
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