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Standard Test Method for Total Nitrogen in Lubricating Oils and Fuel Oils by Modified Kjeldahl Method 用改进的凯氏定氮法测定润滑油和燃料油中总氮的标准试验方法
发布日期: 2022-10-01
1.1 本试验方法包括当润滑油中的氮浓度为0.03 % 至0.10 % 以及当燃料油中的氮浓度为0.015 % 至2.0 % 本试验方法也适用于添加剂浓缩物和添加剂包装的分析。 注1: 本试验方法可能不适用于含有N–O或N–N键的某些材料。然而,合作计划中用于确定测试方法精度的样品与当前可用的含氮无灰添加剂混合。获得了这些添加剂中存在的氮的完全回收。 1.2 以国际单位表示的值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并不旨在解决与其使用相关的所有安全问题(如有)。 本标准的使用者有责任在使用前建立适当的安全、健康和环境实践,并确定监管限制的适用性。 有关特定的警告语句,请参见 7.6 , 7.9 和 9.8 . 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《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 氮的浓度是含氮添加剂存在的量度。对其浓度的了解可用于预测性能。
1.1 This test method covers the determination of nitrogen in lubricating oils when present in the concentration from 0.03 % to 0.10 % by mass, and for the determination of nitrogen in fuel oils when present in the concentration from 0.015 % to 2.0 % by mass. This test method is also applicable to the analysis of additive concentrates and additive packages. Note 1: This test method may not be applicable to certain materials containing N–O or N–N linkage. However, the samples used in the cooperative program to establish the precision of the test method were compounded with currently available ashless additives containing nitrogen. Complete recovery of the nitrogen present in these additives was obtained. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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. For specific warning statements, see 7.6 , 7.9 , and 9.8 . 1.4 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 The concentration of nitrogen is a measure of the presence of nitrogen-containing additives. Knowledge of its concentration can be used to predict performance.
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归口单位: D02.03
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