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  • Title: [Determination of K, Na and Ca in alizarin by flame atomic absorption spectrophotometry].
    Author: Chu L, Wang Y, Wang J.
    Journal: Guang Pu Xue Yu Guang Pu Fen Xi; 1999 Aug; 19(4):625-6. PubMed ID: 15818977.
    Abstract:
    This paper reports the development of the determination of trace metals K, Na and Ca in alizarin. The method is convenient to determine elements in alizarin by flame atom absorption spectrophotometry. The results show that the method has good precision and accuracy. The relative standard deviations of K, Na and Ca are 4.4%, 2.5% and 3.7%, respectively, and the rates of recovery are 97.5%, 98.3% and 98.1% respectively.
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