[Determination of ten metal elements in Ziziphora clinopodioides Lam by microwave digestion-FAAS]

Comprehensive utilization of traditional Uighur medicine has been increasingly emphasized, and the relationship between metal elements and traditional Uighur medicine has attracted great attention, so it is quite important to determine the contents of traditional Uighur medicine. The Ziziphora clinopodioides Lam powder was digested with HNO3 by microwave digestion before determination. Ten metal elements in Ziziphora clinopodioides Lam were determined by FAAS. The work conditions, accuracy and precision of the method were studied. The linear correlations of standard curves are good (r = 0.999 0-0.999 8). The recovery (n = 6) is 95%-108%, and the RSD(n = 6) is 0.45%-1.53%. The results showed that there were comparatively rich metal elements, among which are comparatively high calcium, magnesium and potassium in Ziziphora clinopodioides Lam. The method offers traits of low detection limit, high sensitivity, speediness and exactness, and wasapplied to the determination of metal elements in samples with satisfactory results. It provided useful data for discussing the relationship between the content of the metal elements in Ziziphora clinopodioides Lam and clinical application of the Uighur medicine.