Determination of copper in tea leaves by flame atomic absorption spectrometry

A simple method for the determination of Cu in different tea samples by flame atomic absorption spectrometry (FAAS) has been suggested. Optimal conditions of FAAS determination of copper were determined. Investigation of selectivity of the proposed FAAS method has shown that this procedure is not affected by high concentrations of other different metals. The FAAS method was applied to the determination of Cu in five different tea samples. The accuracy of the developed method was sufficient and proved by the method of addition. The results have demonstrated that the procedure can be applied for the analysis of tea samples with a satisfactory accuracy.