It consists of heat-ing HCl-HNO_3 by microwave in sealed polytetrafluoroethylene autoclave to form pure HCI-HNO_3 vapor with high pressure used to decompose Pd.

• 在密闭的聚四氟乙烯高压罐中，利用微波能瞬间加热盐酸-发烟硝酸，形成高压纯净蒸气，气相分解高纯钯。