The use of zeolite 13X as a stationary phase for direct determination of water in organic sol-vents by high-performance liquid chromatography

Авторы: Luzanova Viktoriya D., Rozhmanova Nina B., Volgin Yuri V., Nesterenko Pavel N.
Журнал: Analytica Chimica Acta
Том: 1239
Год издания: 2023
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Номер статьи: 340697
DOI: 10.1016/j.aca.2022.340697
Аннотация: High-performance liquid chromatography (HPLC) method for direct determination of water impurities in various organic solvents using a column (50 x 4.6 mm, ID) packed with 5 µm faujasite and methanol as an eluent was developed. Detection of the water peaks was performed by using either refractometric or indirect spectrophotometric method at 204 nm. In the first case the limit of detection (LOD) and limit of quantitation (LOQ) were 0.001 wt% and 0.0033 wt%, respectively for a sample volume of 20 µL. A linear calibration plot (R2 = 0.9998) for the water content between 0.01 and 8.00 wt% was obtained. The developed method was applied for the direct analysis of various polar organic solvents including acetonitrile, nitromethane, 1,4-dioxane, 2-ethoxyethanol, methanol, dimethyl sulfoxide (DMSO), ethanol and 2-propanol.
Добавил в систему: Нестеренко Павел Николаевич

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