Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D5291-16
• Năm ban hành / Publication date: 2016
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Methods for Instrumental Determination of Carbon, Hydrogen, and Nitrogen in Petroleum Products and Lubricants
• Số trang / Page: 8
• Phạm vi áp dụng / Scope of standard: 1.1 These test methods cover the instrumental determination of carbon, hydrogen, and nitrogen in laboratory samples of petroleum products and lubricants. Values obtained represent the total carbon, the total hydrogen, and the total nitrogen. 1.2 These test methods are applicable to samples such as crude oils, fuel oils, additives, and residues for carbon and hydrogen and nitrogen analysis. These test methods were tested in the concentration range of at least 75 mass % to 87 mass % for carbon, at least 9 mass % to 16 mass % for hydrogen, and