高效液相色谱法测定柴油多环芳烃含量的关键影响因素  

Key Factors Affecting Analysis Results of Polycyclic Aromatics in Diesel Fuels With High Performance Liquid Chromatography Method

作　　者：宋春侠[1] 刘泽龙[1] 王乾 刘明星[1] SONG Chunxia;LIU Zelong;WANG Qian;LIU Mingxing(Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China;Engineering Group Luoyang R&D Center of Technologies, SINOPEC, Luoyang 471003, China)

机构地区：[1]中国石化石油化工科学研究院,北京100083 [2]中国石化炼化工程集团洛阳技术研发中心,河南洛阳471003

出　　处：《石油学报（石油加工）》2021年第6期1401-1411,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家能源局能源领域行业标准制(修)订计划项目(能源20190145)基金资助。

摘　　要：准确测定多环芳烃含量对于清洁柴油的生产以及环境保护至关重要。针对影响高效液相色谱法测定柴油多环芳烃含量的关键因素,依次考察色谱柱类型、系统平衡时间、基线的划分、模型化合物的选择对柴油中多环芳烃含量测定结果的影响。结果表明:部分氨基键合的液相色谱柱存在单环芳烃和双环芳烃分界点不明确的问题,会影响多环芳烃测定结果的准确性,不建议采用;为获得准确的反冲洗时间,需要在样品分析前,采用系统性能验证标准溶液测试系统状态,待反冲洗时间波动在0.2 min内方可进行样品测试;对于芳烃含量较高的催化裂化柴油以及部分加氢精制柴油,推荐采用SH/T 0606—2019方法(质谱法)进行多环芳烃含量的测定。It is important to accurately determine polycyclic aromatics content for clean diesel fuel production and environment protection.To identify key factors which can impact on analytical results of polycyclic aromatics by high performance liquid chromatography(HPLC)method,effects of column types,system conditioning time,baseline and model compound selection were investigated.Experimental results show that some commercial columns are not recommended to use due to their ambiguous valley between mono-aromatics and di-aromatics.To obtain accurate backflush time,it is recommended to use the system performance standard(SPS)to evaluate the system condition.Before the analytical procedures start,make sure that the fluctuation range of backflush time should be ensured within 0.2 min.For FCC or hydro-refining diesel fuels with high contents of aromatics,it is recommended to use gas chromatography-mass spectrometry method to determine aromatic contents.

关 键 词：高效液相色谱法 柴油 芳烃含量 多环芳烃 标准 

分 类 号：O657.7[理学—分析化学]