以新癀片为对象采用同一的微波、酸消解法，用还原气化冷原子荧光法测汞；用氢化发生-电感耦合等离子体原子发射光谱法测砷；用石墨炉原子吸收法测铅和铜。并用加际消化和国家标准物质的测定，证明方法准确可靠。

Xin Huang Pian (XHP) was used as a representative to verify the reliability for the detection of traces of As，Hg，Pb and Cu in TCM preparations by atomic spectrometry after microwave digestion of the samples. Results of the study showed that the method was reliable and accurate as compar with the established pharmacopoeia standards.