RAPID IDENTIFICATION OF ACTIVE COMPONENTS TYPES OF GASOLINE DETERGENTS BASED ON THIN-LAYER CHROMATOGRAPHY AND NINHYDRIN REACTION

Abstract

Abstract: A rapid determination method based on thin-layer chromatography and ninhydrin reaction was developed to standardize the market order of gasoline detergents and identify the product quality and composition types of active components on the market. Firstly, ninhydrin was used as a chromogenic reagent to react with detergent on a silica plate, and the concentration detection limit and optimal concentration range of different active components were given. Then, the identification methods of single composition and multi-composition were developed based on the polarity and solubility characteristics of the three active components. Finally, this method was used to analyze 6 kinds of detergent products on the market, and 3 kinds of products were identified as unqualified. Other products were classified and identified, and the identification results were consistent with the results of mass spectrometry analysis. In summary, this method has the advantages of good separation, simple operation, fast detection speed, no need for complex instruments, and visual observation, which can meet the current requirements.

Key words: gasoline detergent, fuel improver, ninhydrin reaction, rapid analysis, thin-layer chromatography

References

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