[Determination of trace elements in Niuhuang Jiedu tablets by microwave digestion and ICP-AES].

Niuhuang Jiedu tablets were digested with HNO_3-H_2O_2 system by microwave digestion.The fourteen trace elements of As,Ca,Mg,Al,Mn,Sr,Ba,Se,Ni,Cd,Cu,Zn,Mo and Pb in the solution were determined by ICP-AES.The ICP-AES result proved to be reliable by adding standard recovery experiment to the process.By comparison with the result of chemical(experiment,) thr present method was accurate,quickly-accessible,and convenient.It was used for Niuhuang Jiedu tablets with result satisfactory.