Nine trace elements and macro elements in Zhenkequtanheji, such as Mg, Cr, K, Ca, Na, K, Fe, Zn and Ni were determined by flam absorption spectrophotometry.

• 采用火焰原子吸收分光光度法测定了镇咳祛痰合剂中钠、、、、、、、、九种微量、量元素的含量。