Inverse Gas Chromatography Used to Study Lubricating Oil Oxidation Mechanism via Changes in Kovats and Flory-Huggins Retention Parameters

作     者：MOSTAFA Nagy E EISSA Elham A 

作者机构：Egyptian Petroleum Research InstituteCairoEgypt 

出 版 物：《色谱》 (Chinese Journal of Chromatography)

年 卷 期：2006年第24卷第3期

页      面：284-289页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

主　　题：test IGC KOH ASTM rate 

摘      要：Inverse gas chromatographic technique(IGC) was attempted as a new approach to follow the chem-ical changes that occur during lubricating base oil *** groups of the oxidized base oils were pre-pared at different oxygen flow rates,periods and temperatures according to *** corrected reten-tion volumes(VR) were calculated for a series of selected test solutes possessing different functional groups onthe oxidized base oils used as stationary *** retention index(I),Flory-Huggins interaction parame-ter(κ1∞,2),and partial molar free energy of solution(ΔGL∞),were calculated for the given test solutes *** relationships between theIvalues and the oxidation variables were plotted and *** results were confirmed by potentiometric *** study reveals that the magnitudes of variationofI,κ1∞,2orΔG∞Lretention parameters depend on the oxidation degree of the base *** differences be-tween theIvalues permit discrimination between the different oxidation *** words: inverse gas chromatography(IGC);oxidation;lubricating base oil;Kovats retention