1.1 本标准涵盖两种试验方法（方法A适用于粒状材料，方法B适用于粉末材料），可作为评估有机粘土代表性样品吸油能力的指数试验。本试验方法并非性能试验，试验方法中规定的油可能产生与现场遇到的其他非水相液体（例如煤焦油、杂酚油、原油）不同的结果。方法A仅适用于颗粒状有机粘土；否则，更细的颗粒可能会通过测试筛。 1.2 所有观察值和计算值应符合实践中确定的有效数字和舍入准则 D6026 . 1.2.1 本标准中用于规定如何收集/记录或计算数据的程序被视为行业标准。 此外，它们代表了通常应保留的有效数字。使用的程序不考虑材料变化、获取数据的目的、特殊目的研究或用户目标的任何考虑因素；通常的做法是增加或减少报告数据的有效位数，以与这些考虑因素相称。考虑工程设计分析方法中使用的有效数字超出了本标准的范围。 1.3 单位- 以国际单位制表示的数值应视为本标准的基本单位。本标准中还包括非国际标准计量单位，用于描述某些设备（桶、筛），仅供参考。 1.4 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。 1.5 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====== 5.1 本标准试验方法旨在作为一种指数试验，以确定有机粘土的相对吸油能力。有机粘土用于修复受污染的沉积物、土壤和地下水。 本标准试验方法的结果可用于 一 )评估产品是否符合制造质量控制规范，以及 b )根据施工质量保证材料规范评估产品验收。指定的亲有机粘土可以是颗粒状或粉末状。有两种测试方法；颗粒试样的重力试验方法和粉末试样的离心试验方法。 注1: 本标准产生的结果的质量取决于执行该标准的人员的能力，以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常认为能够胜任和客观的测试/采样/检查等。本标准的用户应注意遵守惯例 D3740 本身并不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了一种评估其中一些因素的方法。

1.1 This standard covers two test methods (Method A for granular material, Method B for powdered material) that can be used as an index test for the evaluation of the oil sorption capacity of a representative sample of organophilic clay. The test method is not intended to be a performance test and the oil specified in the test methods may yield different results than other non-aqueous phase liquids (for example, coal tar, creosote, crude oil) encountered in the field. Method A should only be used on granular organophilic clay; otherwise finer particles may pass through the test sieve. 1.2 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . 1.2.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of the reported data to be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. 1.3 Units— The values stated in SI units are to be regarded as the primary units for the standard. For information only, non-SI units of measurement are also included in this standard to describe some equipment (bucket, sieve). 1.4 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. 1.5 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 ====== 5.1 This standard test method is intended as an index test to determine the relative oil sorption capacity of an organophilic clay. Organophilic clay is used for remediation of contaminated sediment, soil, and groundwater. Results of this standard test method can be used for a ) evaluating whether product meets a manufacturing quality control specification, and b ) evaluating acceptance of a product per a construction quality assurance material specification. The organophilic clay specified may be either granular or powder. There are two test methods; a gravity test method for granular specimens and a centrifuge test method for powdered specimens. Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.