超過10種微量元素可使用儀器中子活化分析，超熱中子活化分析於中藥之複合藥方的四君子湯及參苓白朮散，為了健康及加強脾腎的功能，台灣地區的兒童廣泛時用這些藥方。鋁、氯、鈷、鉻、鐵、鉀、鈉、銣、銻、鈧及鋅由中子活化分析 ; 砷、鎘、錳、銻等元素可由超熱中子活化分析得到，本結果元素濃度與文獻值相符合，元素含量在104至10-3 ?g/g 之間，砷、鎘的每日最大攝取量低於世界健康組織之建議質。
The elemental concentrations of two Chinese herbal prescriptive medicines were analyzed using Instrumental Neutron Activation Analysis (ENAA). For the purpose of treating disease and maintaining good health, these herbal medications have been commonly used to strengthen the spleen and recoup the vital energy consumed by Taiwanese children. The concentrations of Al, Cl, Co, Cr, Fe, K, Na, Sc, and Zn were determined by INAA, and As, Cd, Mn, and Sb were determined by ENAA. The values of elements analyzed both by INAA and ENAA were in excellent agreement with values reported in published data. The ranges of elemental concentrations were found to vary from 104 to 10-3 ?g/g from one prescription to the other. The maximum daily intakes (MDI) of toxic metals, As, and Cd were within acceptable WHO/RDA limits.
