Extracting characteristics of trace element in Heze peony flower tea by applying microwave slaking and FAAS
The contents and extracting characteristic of Ca, Cu, Fe, Zn and Mn in Heze peony flower tea were determined by microwave slaking and flame atomic absorption spectrometry(FAAS) in this study. The recovery relation of testing method was 93.6%～101.2% and the relation error was 0.36%～2.35%. The extracting characteristics of these trace elements in different soaking time and times were analyzed. The result show that the infusing amount of the trace elements in peony flower tea show a increasing trend with the soaking time. The optimum conditions for soaking were obtained with soaking time 10～20 min and soaking for 3～4 times.