title: [Determination of K, Na and Ca in alizarin by flame atomic absorption spectrophotometry].
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.
authors.affiliation: The 46th Institute of Industrial Department, 300192 Tianjin.
authors.forename: L
authors.initials: L
authors.lastname: Chu
authors.forename: Y
authors.initials: Y
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Wang