低核磁共振法测定矿物油中芳烃含量

IF 0.4 Q4 MULTIDISCIPLINARY SCIENCES

Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki Pub Date : 2023-01-01 DOI:10.26907/2542-064x.2023.2.322-339

M.G. Fazlyyyakhmatov, I. N. Shamanov, B. V. Sakharov, N. M. Khasanova, M. Varfolomeev, G. Samosorov, M. Pastukhov

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引用次数: 0

摘要

矿物油的分子基组成分析有助于预测未来润滑剂的性能和评价增塑剂油与橡胶的相容性。采用脉冲低频核磁共振弛豫法测定了11种矿物油样品的分子基组成，并计算了样品中芳香烃和非芳香烃的比例。在1H共振频率为20 MHz的chrotec - proton 20M核磁共振分析仪上进行核磁共振测量。所采用的方法包括记录自由感应衰减信号，重建总信号幅度，估计样品单位质量的相对信号幅度，计算样品中芳烃的比例。结果与标准色谱法进行了比较。结果之间存在高度相关(R2 = 0.99)。

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Determination of the Aromatics Content in Mineral Oils by LF NMR

Molecular group composition analysis of mineral oils is helpful to predict the performance of a future lubricant and to assess the compatibility of plasticizer oil with rubbers. The method of pulsed low-frequency NMR relaxation was used to determine the molecular group composition of 11 mineral oil samples, and the ratio of aromatic and non-aromatic hydrocarbons in them was calculated. NMR measurements were performed on a Chromatec-Proton 20M NMR analyzer with a 1H resonance frequency of 20 MHz. The method used consists in recording free induction decay signals, reconstructing the total signal amplitude, estimating the relative signal amplitude per unit mass of the sample, and calculating the proportion of aromatic hydrocarbons in the sample. The results were compared with those obtained by the standard chromatographic method. A high degree of correlation (R2 = 0.99) was observed between the results.

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来源期刊

Uchenye Zapiski Kazanskogo Universiteta. Seriya Estestvennye Nauki MULTIDISCIPLINARY SCIENCES-

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

17 weeks