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请看美泰最新版U的描述
3.4.3.1.2 All Other Elements
3.4.3.1.2.1 Use one of the following digestion methods as applicable:
.AOAC Official Method 974.02,Lead in paint
.EPA Method 3051A, Microwave Assisted Digestion of Sediments,Sludge,Soils,and Oils
.EPA Method 3052,Microwave Assisted Digestion of Siliceous and Organically Based Matrices.