Several metal elements content analysis of Elaeagnus angustifolia

Abstract: After ashing and digesting samples, contents of nine metal elements (Na, Ca, Mg, Zn, Fe, Cu, Mn, Ni and Cd) in Elaeagnus angustifolia were determined by flame atomic absorption spectrophotometry (FAAS). Optimum working conditions, accuracy and precision of the methods for determining different elements were investigated. The results indicated the contents of Zn, Cu, Mn, Fe, Mg, Ni, Ca and Na were 4.06, 6.21, 0.02, 1.87, 88.40, 2.50, 137.60 and 48.25 g/g with Cd not detected. The recovery percentage of standard addition was between 98.5% and 105.5%, and the relative standard deviation was between 0.54% and 1.78%. In conclusion, the determining method is quick and simple to operate, and it has good precision and accuracy to meet analyzing requirements.