应用扫描电镜X射线能谱仪定量分析了9个牛黄样品的微量元素，结果表明天然牛黄合10种微量元素（Na、K、Ca、Mg、Zn、Fg、Cu、P、C1、S），牦牛黄含8种微量元素（Na、K、Ca、Fe、Cu、Ce、C1、S），培植牦牛黄含10种微量元素（Na、K、Ca、Mg、Fg、Cu、P、Rb、C1、S）。这3种牛黄共同含有7种微量元素（Na、K、Ca、Fe、Cu、C1、S），其间含量差别不大。

Nine samples of oX-gallstong have been studied by scanning electron microscope and energy dispersive X-ray spectrometer. The determinative results indicated that calculus of Bos faurus domesticus Gmelin contained ten trace elements (Na, K, Ca, Mg, Zn, Fe, Cu,P, Cl,S), calculus of B.grunniens L. contained eight trace elements (Na, K, Ca, Fe, Cu,Ce, Cl, S), cultivate calculus of B. grunniens L. contained ten trace elements (Na, K,Ca, Mg, Fe, Cu, P, Nd, Cl, S).Three species calculus all contained seven trace elements (Na, K, Ca, Fe, Cu, Cl, S), and the differences of their coontent were no significant.