The best digestion condition was found by using HNO_3-HF-HClO_4 and HNO_3-HCl-H_2O_2 to digest soil sample.

• 通过硝酸-氢氟酸-高氯酸以及硝酸-盐酸-过氧化氢体系消解液对土壤样品消解,选择出微波最佳消解条件。