1.1 本试验方法用于测定土壤中的水溶性硫酸盐。 1.2 本试验方法适用于土壤中水溶性硫酸盐浓度在0.02至3.33之间的情况 % 按质量计的硫酸盐。 1.3 本试验方法不测定除硫酸盐外的任何形式的硫。 1.4 一些管理机构管理土壤从一个地区到另一个地区的移动。取样器和实验室应遵守所有规定。 1.5 本试验方法的文本是指提供解释材料的注释和脚注。这些注释和脚注（不包括表和图中的注释和脚注）不应视为本标准的要求。 1.6 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 该试验方法可用于确定土壤是否会对水硬性水泥混凝土产生不利反应。

1.1 This test method is for the determination of water-soluble sulfate in soils. 1.2 This test method was developed for concentrations of water-soluble sulfate in soils between 0.02 and 3.33 % sulfate by mass. 1.3 This test method does not determine sulfur in any form except as sulfate. 1.4 Some governing bodies regulate the movement of soils from one area to another. It is up to the sampler and laboratory to comply with all regulations. 1.5 The text of this test method refers to notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this standard. 1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 This test method can be used to determine if soils could have an adverse reaction with hydraulic cement concrete.