FAAS Determination of Micro Amounts Elements in Some Chinese Traditional Medicines

Four micro amounts elements,i.e.,Fe,Cu,Mn and Zn,which were found to be essential for human healthy,were determined in some traditional Chinese medicines,especially those belonging to the category of vital energy regulation and obstruction removal,among which 5 medicines,namely dried tangerine,fingered citron,sichuan origin-chinaberry seeds,wood spice and cyperus rotundus,were taken as objects for study.Rate of extraction of the micro amounts elements from the 5 medicines mentioned above by decoction in water was also tested.In the FAAS determination,the sample was digested with a mixed acid of HNO3 and HClO4 in the volumic ratio of 4 to 1.Working conditions of the instrument were given in detail.Data obtained were beneficial for the utilization of the medicines.