Being dissolved by aqua regia, concentrated by active carbon, and re-dissolved after incinerating to remove carbon, the amounts of palladium and gold in the samples can be directly analyzed by AAS.

• 样品经过王水溶解、活性炭吸附富集、灰化除炭、再溶解等过程，利用原子吸收法，直接测定钯和金的含量。