1.1 本试验方法包括通过旋转圆盘电极原子发射光谱法（RDE-AES）测定因燃气轮机或柴油发动机燃料腐蚀而产生的污染物和材料。 1.1.1 本试验方法适用于ASTM等级0-GT、1-GT、2-GT、3-GT和4-GT燃气轮机燃料和等级低硫1-D、低硫2-D、1-D、2-D和4-D柴油。 1.1.1.1 进入涡轮机燃烧室的燃料的痕量金属极限为0.5 规格中钒、钠+钾、钙和铅各mg/kg D2880 适用于所有GT等级。 1.1.2 本试验方法可快速现场测定燃气轮机和柴油发动机燃料中的污染和腐蚀元素，范围从mg/kg到数百mg/kg，因此可以确定燃料质量和所需处理水平。 1. 1.3 本试验方法使用油溶性金属进行校准，并不旨在定量测定或检测不溶性颗粒。 1.2 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。浓度的首选单位为mg/kg（质量ppm）。 1.3 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。 1.4 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 燃气轮机和柴油发动机的运行经验表明，燃料中存在的一些成灰物质会导致高温腐蚀、积灰和燃料系统结垢。成灰材料可能以油溶性金属有机化合物、水溶性盐或固体杂质的形式存在于燃料中。它们的存在和浓度因原油的地理来源而异，在精炼过程中集中在残余馏分中。尽管馏出燃料油通常是无污染的，但稍后可能会以含盐水的形式引入成灰材料，或在运输和储存过程中与其他石油产品接触。燃气轮机和柴油发动机燃料的规格以及污染和微量金属的重要性在规格中有详细说明 D2880 和 D975 . 5.1.1 在燃料到达燃气轮机或柴油发动机之前对其进行预处理已成为使用重石油燃料的装置以及使用轻馏分燃料油的场所的先决条件。现场燃油分析以确定污染程度是燃油质量管理计划的一个组成部分。它首先用于确定所需治疗的程度，然后用于确定治疗的有效性。它从燃油的输送开始，在整个燃油处理过程中持续，直到燃油喷射到涡轮或发动机中为止。 5.1.2 燃料污染规格因燃气轮机制造商而异。然而，无一例外，每种方法都要求污染物必须尽可能低。在大多数发电装置中，业主有责任验证燃料清洁度是否符合涡轮机制造商的保修规范。 这导致现场分析仪器的性能要求低于1.0 对于几种元素，mg/kg。

1.1 This test method covers the determination of contaminants and materials as a result of corrosion in gas turbine or diesel engine fuels by rotating disc electrode atomic emission spectroscopy (RDE-AES). 1.1.1 The test method is applicable to ASTM Grades 0-GT, 1-GT, 2-GT, 3-GT, and 4-GT gas turbine fuels and Grades Low Sulfur No. 1-D, Low Sulfur No. 2-D, No. 1-D, No. 2-D, and No. 4-D diesel fuel oils. 1.1.1.1 Trace metal limits of fuel entering turbine combustor(s) are given as 0.5 mg/kg each for vanadium, sodium + potassium, calcium, and lead in Specification D2880 for all GT grades. 1.1.2 This test method provides a rapid at-site determination of contamination and corrosive elements ranging from fractions of mg/kg to hundreds of mg/kg in gas turbine and diesel engine fuels so the fuel quality and level of required treatment can be determined. 1.1.3 This test method uses oil-soluble metals for calibration and does not purport to quantitatively determine or detect insoluble particles. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. The preferred units for concentration are mg/kg (ppm by mass). 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. 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 Operating experience of gas turbines and diesel engines has shown that some of the ash-forming substances present in a fuel can lead to high temperature corrosion, ash deposition, and fuel system fouling. Ash-forming materials may be in a fuel as oil-soluble metallo-organic compounds as water-soluble salts or as solid foreign contamination. Their presence and concentration varies with the geographical source of a crude oil and they are concentrated in the residual fractions during the refining process. Although distillate fuel oils are typically contaminant free, ash-forming materials may be introduced later in the form of salt-bearing water or by contact with other petroleum products during transportation and storage. Specifications of gas turbine and diesel engine fuels and the significance of contamination and trace metals are detailed in Specifications D2880 and D975 . 5.1.1 Pre-conditioning of the fuel before it reaches the gas turbine or diesel engine has become a prerequisite for installations that use heavy petroleum fuel, and also for sites that use light distillate fuel oils. On-site fuel analysis to determine the extent of contamination is an integral part of a fuel quality management program. It is used first to determine the extent of the required treatment, and later, the effectiveness of the treatment. It starts with the delivery of the fuel, continues throughout fuel handling and ends only as the fuel is injected into the turbine or engine. 5.1.2 Fuel contamination specifications vary among the different gas turbine manufacturers. However, without exception, each requires that contaminants must be as low as possible. In most power generation installations, it is the owner who has the responsibility of verifying fuel cleanliness in compliance with the turbine manufacturer's warranty specifications. This leads to an on-site analytical instrument performance requirement of below 1.0 mg/kg for several elements.