GB/T 30519-2014 in English

《GB/T 30519-2014轻质石油馏分和产品中烃族组成和苯的测定 多维气相色谱法》由TC280（全国石油产品和润滑剂标准化技术委员会）归口，TC280SC1（全国石油产品和润滑剂标准化技术委员会石油燃料和润滑剂分会）执行，主管部门为国家标准化管理委员会。
本标准规定了用多维气相色谱技术测定轻质石油馏分和产品中烃族组成和苯含量的试验方法。
本标准适用于终馏点不高于215℃的轻质石油馏分或产品如汽油调合组分、溶剂油、汽油产品等中的烃族组成和苯含量的测定。测定浓度范围烯烃体积分数(或质量分数)为0.5% ~70% 、芳烃体积分数(或质量分数)为1% ~80% ,苯体积分数(或质量分数)为0.2% ~10%。对馏程符合本标准要求、由其他非常规原油如页岩或油砂加工得到的汽油产品或由非石油矿物燃料合成加工的烃类燃料如费托
合成油等本方法也同样适用。超出含量范围的样品本方法也可测定,但没有给出精密度数据。
对车用汽油,为改善汽油产品性能或其他目的,常含有醚类或醇类含氧化合物组分,也可能有多种含氧化合物组分共存,此时样品中的醚类化合物会随烯烃组分一起出峰,醇类化合物则随C7+ 芳烃组分一起出峰。对于含有含氧化合物的汽油样品,用相关试验方法(如SH/T0663)测定其中的含氧化合物类型和含量,并参照附录A 的步骤对烃族组成结果进行必要校正后,适用于本标准。
本标准不适用于测定除苯外的各烃族中的单体组分含量。

Scope

This standard specifies the test method for the determination of hydrocarbon group composition and benzene content in light petroleum distillates and products by multidimensional gas chromatography. This standard is applicable to the determination of hydrocarbon group composition and benzene content in light petroleum fractions or products with final boiling point not higher than 215°C, such as gasoline blending components, solvent oil, gasoline products, etc. The determination concentration ranges are 0.5%-70% olefin volume fraction (or mass fraction), 1%-80% aromatic hydrocarbon volume fraction (or mass fraction), and 0.2%-10% benzene volume fraction (or mass fraction). This method is also applicable to gasoline products whose distillation range meets the requirements of this standard, processed from other unconventional crude oils such as shale or oil sands, or hydrocarbon fuels synthesized from non-petroleum mineral fuels such as Fischer-Tropsch synthetic oil. Samples beyond the content range can also be determined by this method, but the precision data is not given. For motor gasoline, in order to improve the performance of gasoline products or other purposes, it often contains ether or alcohol oxygenate components, and there may also be multiple oxygenate components coexisting. At this time, the ether compounds in the sample will be mixed with olefins The components elute together, and the alcohols elute together with the C₇ ⁺ aromatic components. For gasoline samples containing oxygenated compounds, use relevant test methods (such as SH/T 0663) to determine the type and content of oxygenated compounds in it, and refer to the steps in Appendix A to make necessary corrections to the hydrocarbon group composition results, and then apply to this standard . This standard is not applicable to the determination of monomer component content in each hydrocarbon group except benzene.