1.1本规程涵盖了使用偏硼酸锂（LiBO）对固体废物进行干燥、灰化和增溶 2. )用于随后通过氩等离子体发射光谱法或原子吸收光谱法测定无机成分的融合。 1.2以下元素可通过本规程溶解: 铝 铬 硅 钡 铁 钛 镉 镁 钒 钙 锰 锌 铜 镍 1.3本规程已成功用于铝土矿和中和金属处理污泥。本规程可能适用于上述未列出的其他要素。一些金属，如镉和锌，可能在干燥、灰化或熔融步骤中从一些样品中挥发。 分析员负责确定该规程是否适用于正在测试的固体废物。 1.4本规程旨在溶解固体废物中的非挥发性无机成分。LiBO 2. 熔融适用于硅酸盐基质或耐酸样品。 1.5 本标准并非旨在解决与其使用相关的所有安全问题。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 具体危险说明见第7节。 ====意义和用途====== 选择适当的废物处理方法通常需要了解废物中的无机成分。固体废物可能以多种形式存在，并含有一系列有机和无机成分。本规程描述了一种干燥和灰化步骤，该步骤可用于在测定非挥发性金属之前去除水分和挥发性及非挥发性有机成分。干灰的生成浓缩了感兴趣的无机成分，并使LiBO 2. 融合适用于更多种类的废物样本。溴化锂酸化 2. 融合混合产生的溶液适用于电感耦合等离子体（ICP）或原子吸收光谱（AAS）分析。

1.1 This practice covers the drying, ashing, and solubilization of solid waste using a lithium metaborate (LiBO 2 ) fusion for the subsequent determination of inorganic constituents by argon plasma emission spectroscopy or atomic absorption spectroscopy. 1.2 The following elements may be solubilized by this practice: aluminum chromium silicon barium iron titanium cadmium magnesium vanadium calcium manganese zinc copper nickel 1.3 This practice has been used successfully with a bauxite ore and a neutralized metal treatment sludge. The practice may be applicable to other elements not listed above. Some metals, such as cadmium and zinc, may volatilize from some samples during the drying, ashing, or fusion steps. The analyst is responsible for determining whether the practice is applicable to the solid waste being tested. 1.4 This practice is intended for the solubilization of nonvolatile inorganic constituents in solid waste. The LiBO 2 fusion is appropriate for a silicate matrix or acid resistant samples. 1.5 This standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 7. ====== Significance And Use ====== A knowledge of the inorganic constituent composition in a waste is often required for the selection of appropriate waste disposal practices. Solid waste may exist in a variety of forms and contain a range of organic and inorganic constituents. This practice describes a drying and ashing step that may be applied to remove moisture and volatile and nonvolatile organic constituents prior to determining nonvolatile metals. Generation of a dry ash concentrates the inorganic constituents of interest and makes the LiBO 2 fusion feasible for a greater variety of waste samples. Acidification of the LiBO 2 fusion mix results in a solution amenable to inductively coupled plasma (ICP) or atomic absorption spectrometry (AAS) analysis.