高效液相色谱法测定柴油中的芳烃含量

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作者单位:: 中国石油石油化工研究院大庆化工研究中心，黑龙江大庆 163714
PetroChina Petrochemical Research Institute Daqing Petrochemical Research Center，Daqing 163714，China

关键词:: 高效液相色谱；柴油；芳烃；含量分析
high performance liquid chromatography；diesel oil；aromatic hydrocarbons；content analysis

摘要:: 摘要：采用高效液相色谱—示差折光检测器法测定柴油中单环芳烃、双环芳烃、三环及以上芳

烃含量，通过反冲洗技术，采用氨基色谱柱，以正庚烷为流动相，对柱温、流动相流速、进样量

等重要影响因素进行了考察。结果表明，在柱温35 ℃，流动相流速1.0 mL/min，进样量10 μL

条件下分析柴油芳烃，相对标准偏差（RSD）在1.2%~4.7%，加标回收率在90.9%~108.4%之间，

满足色谱分析要求。

Abstract: The content of single cyclic aromatic hydrocarbons, double cyclic aromatic hydrocarbons, tricyclic aromatic hydrocarbons

and above in diesel oil was determined by high performance liquid chromatogram-differential refractive detector. By backwashing

technology, an amino chromatographic column was used with n-heptane as the mobile phase. The important influencing factors such

as column temperature, flow rate of mobile phase and sample size were investigated. The relative standard deviations (RSDS) ranged

from 1.2% to 4.7% and the recoveries ranged from 90.9% to 108.4% at the flow rate of 1.0 mL/min and sample size of 10 μL, which

met the requirements of chromatographic analysis.