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ISO 20846-2019 石油产品--汽车燃料硫含量的测定--紫外荧光法 Petroleum products -- Determination of sulfur content of automotive fuels -- Ultraviolet fluorescence method
This document specifies an ultraviolet (UV) fluorescence test method for the determination of the <br />sulfur content of the following products:<br />— having sulfur contents in the range 3 mg/kg to 500 mg/kg,<br />— motor gasolines containing up to 3,7 % (m/m) oxygen [including those blended with ethanol up <br />to about 10 % (V/V)],<br />— diesel fuels, including those containing up to about 30 % (V/V) fatty acid methyl ester (FAME),<br />— having sulfur contents in the range of 3 mg/kg to 45 mg/kg,<br />— synthetic fuels, such as hydrotreated vegetable oil (HVO) and gas to liquid (GTL).<br />Other products can be analysed and other sulfur contents can be determined according to this test <br />method, however, no precision data for products other than automotive fuels and for results outside <br />the specified range have been established for this document. Halogens interfere with this detection <br />technique at concentrations above approximately 3 500 mg/kg.<br />NOTE 1 Some process catalysts used in petroleum and chemical refining can be poisoned when trace amounts <br />of sulfur-bearing materials are contained in the feedstocks.<br />NOTE 2 This test method can be used to determine sulfur in process feeds and can also be used to control <br />sulfur in effluents.<br />NOTE 3 For the purposes of this document, “% (m/m)” and “% (V/V)” are used to represent the mass fraction, <br />w, and the volume fraction, φ, of a material respectively.<br />NOTE 4 Sulfate species in ethanol do not have the same conversion factor of organic sulfur in ethanol. <br />Nevertheless, sulfates have a conversion factor close to that of organic sulfur.<br />NOTE 5 Nitrogen interference can occur, see 6.5 for further guidance....
2024-02-01 13:30:03浏览:8
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SN/T 4523-2016 出口葡萄酒中多种韭法色素的测定 液相色谱-质谱/质谱法 Determination of various illegal pigment in grape wine for export- LC-MS-MS method
本标准规定了出口葡萄酒中酸性橙、酸性黄、酸性红、苏丹I、苏丹II、苏丹Ⅲ、苏丹Ⅳ、碱性橙、罗丹明B的液相色谱一质谱/质谱检测方法。<br />本标准适用于红葡萄酒和白葡萄酒中酸性橙、酸性黄、酸性红、苏丹I、苏丹II、苏丹Ⅲ、苏丹Ⅳ、碱性橙、罗丹明B的测定和确证。...
2024-01-31 11:00:01浏览:5
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NF T51-117-1-2019 Plastics - Determination of dynamic mechanical properties - Part 1 : general principles
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2024-01-31 02:45:01浏览:5
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ISO 13061-17-2017 木材的物理力学性能--干净木材小试样的试验方法--第17部分:在压缩平行于晶粒时最终应力的测定 Physical and mechanical properties of wood — Test methods for small clear wood specimens — Part 17: Determination of ultimate stress in compression parallel to grain
This document specifies a method for determining the ultimate stress in compression parallel to grain of wood....
2024-01-30 12:00:01浏览:7
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JB/T 12344-2015 铅酸蓄电池中砷元素测定方法 Determination method for arsenic in lead-acid battery
本标准规定了铅酸蓄电池(以下简称蓄电池)及铅蓄电池含铅零部件中砷元素的测定方法。<br />本标准适用于以铅为主要原料的蓄电池及其含铅零部件。<br /> ...
2024-01-30 11:15:01浏览:5
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SN/T 4520-2016 出口动物源食品中硝呋索尔代谢物残留量的测定 液相色谱-质谱/质谱法 Determination of residue of nifursol metabolites in foodstuffs of animal origin for export-LC-MS/MS method
本标准规定了动物源性食品中硝呋索尔的代谢物3,5-二硝基水杨酰肼残留量(3,5-dinitrosalicylic<br />acidhydrazine,简称DNSAH)的液相色谱-质谱/质谱(LC-MS/MS)测定与确证方法。<br />本标准适用于猪肉、鸡肉、鸡肝、猪肝、龙虾、草虾、肠衣、鳗鱼、蜂蜜中硝呋索尔代谢物残留量的测定和确证。...
2024-01-30 07:15:02浏览:7
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PD CEN ISO/TR 8124-8-2016 玩具安全 年龄确定指南 Safety of toys. Age determination guidelines
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2024-01-29 22:15:01浏览:7
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