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- W2373642698 abstract "A new method for determination of acid number in oils was developed.The method was modified from the GB/TT304 method and was entirely based on potential jump with green solvents.Toluene in mixture solvents was replaced by petroleum ether in combination with alkalescence hydramine,in which weak acidic materials could be extracted and apparent acidity could be enhanced.Quaternary ammonium hydroxide with higher basicity was used as titrant instead of potassium hydroxide.The end point was determined completely with potential jump,avoiding auxiliary estimation with m-nitrophenol buffer solution and the drawbacks of toxic and short period validity.Through this proposed method,the range of application was expanded and the accuracy was improved.The results of acid number were in accordance with GB/T7304 with relative deviation less than 3.0%.The minimum of quantitation was 0.005 mg(KOH)/g.The method has been successfully applied to the determination of actual oil samples with satisfying results." @default.
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- W2373642698 date "2012-01-01" @default.
- W2373642698 modified "2023-09-24" @default.
- W2373642698 title "Determination of Acid Number in Oils by Potential Jump with Green Solvents" @default.
- W2373642698 hasPublicationYear "2012" @default.
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