Analysis of Calucium in Tea by Inductively Coupled Plasma-Atomic Emission Spectrometry and Atomic Absorption Spectrometry

Abstract

The Ca content in tea was compared by using the both methods of an inductively coupled plasma-atomic emission spectrometry and an atomic absorption spectromety. The Ca content in tea could be determined directly by the inductively coupled plasmaatomic emission spectrometry. The interference by P and other major elements on the assay of Ca was not recognized. However, on the atomic absorption spectrometry, the addition of high concentration(over 1, 000ppm) of Sr in the assay solution was indispensable to eliminate the the interference of P.