本文件规定了土壤、处理过的生物废物、污泥和垃圾的三种消化方法 使用由盐酸（HCl）、硝酸（HNO3）和四氟硼酸盐（HBF4）组成的酸混合物，或 盐酸（HCl）、硝酸（HNO3）和氢氟酸（HF）作为消化溶液。 用这些酸进行消化实际上被认为是样品的完全分解。元素 在许多情况下，通过该程序可提取的物质可以被描述为“总量”，尽管这将是一个样本 依靠的购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies three methods for the digestion of soil, treated biowaste, sludge and waste by the use of an acid mixture composed of hydrochloric (HCl), nitric (HNO3) and tetrafluoroboric (HBF4) or hydrochloric (HCl), nitric (HNO3) and hydrofluoric (HF) acid as the digestion solution. Digestion with these acids is effectively considered as a total decomposition of the sample. Elements extractable by this procedure can in many instances be described as "total", although this will be sample dependent.All current amendments available at time of purchase are included with the purchase of this document.