{"title":"Analysis of fatty acid composition, structure, and proportion in polyol esters applied in aviation turbine engines.","authors":"Fengyuan Zhang, Guiying Kang, Binbin Wei, Jia Liu, Junming Wang, Yuanchun Li, Hailu Liu","doi":"10.1007/s00216-024-05648-4","DOIUrl":null,"url":null,"abstract":"<p><p>Synthetic esters are widely applied in aviation turbine engines due to its excellent lubrication performance. Mixed acids with varying chain lengths and degrees of isomerization are often used in the esterification process to ensure the comprehensive lubricity of synthetic esters. In industrial production, the feeding ratio of mixed acids is usually adjusted by viscosity properties of synthetic esters, so the exact proportion of each acid in the final product is unknown. A method has been developed here to rapidly extract fatty acids used in commercially available synthetic ester lubricants through transesterification reactions, with methanol as the ester exchange reagent. Accurate qualitative and quantitative analysis of it is performed using GC-MS. Compared with the saponification extraction technique, this method is fast, simple, and easy to operate. The formation of this analytical approach can not only simplify the identification of fatty acids in industrial synthetic esters, but also help to determine the accurate ratio of mixed acids in laboratory esterification products, thereby providing technical support for the upgrading and replacement of products.</p>","PeriodicalId":462,"journal":{"name":"Analytical and Bioanalytical Chemistry","volume":" ","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analytical and Bioanalytical Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s00216-024-05648-4","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
引用次数: 0
Abstract
Synthetic esters are widely applied in aviation turbine engines due to its excellent lubrication performance. Mixed acids with varying chain lengths and degrees of isomerization are often used in the esterification process to ensure the comprehensive lubricity of synthetic esters. In industrial production, the feeding ratio of mixed acids is usually adjusted by viscosity properties of synthetic esters, so the exact proportion of each acid in the final product is unknown. A method has been developed here to rapidly extract fatty acids used in commercially available synthetic ester lubricants through transesterification reactions, with methanol as the ester exchange reagent. Accurate qualitative and quantitative analysis of it is performed using GC-MS. Compared with the saponification extraction technique, this method is fast, simple, and easy to operate. The formation of this analytical approach can not only simplify the identification of fatty acids in industrial synthetic esters, but also help to determine the accurate ratio of mixed acids in laboratory esterification products, thereby providing technical support for the upgrading and replacement of products.
期刊介绍:
Analytical and Bioanalytical Chemistry’s mission is the rapid publication of excellent and high-impact research articles on fundamental and applied topics of analytical and bioanalytical measurement science. Its scope is broad, and ranges from novel measurement platforms and their characterization to multidisciplinary approaches that effectively address important scientific problems. The Editors encourage submissions presenting innovative analytical research in concept, instrumentation, methods, and/or applications, including: mass spectrometry, spectroscopy, and electroanalysis; advanced separations; analytical strategies in “-omics” and imaging, bioanalysis, and sampling; miniaturized devices, medical diagnostics, sensors; analytical characterization of nano- and biomaterials; chemometrics and advanced data analysis.