Роль пробоподготовки в хроматографическом анализе следовых количеств карбоновых кислот в составе водных объектов Д. В. Цуран
Material type:
ArticleContent type: Текст Media type: электронный Other title: The role of sample preparation in ghromatographic analysis of trace amounts of carboxylic acids in water [Parallel title]Subject(s): пробоподготовка | карбоновые кислоты | хроматографический анализ | вода | экспериментальные исследованияGenre/Form: статьи в сборниках Online resources: Click here to access online
In:
Перспективы развития фундаментальных наук. Т. 2 : сборник научных трудов XVIII Международной конференции студентов, аспирантов и молодых ученых, 27–30 апреля 2021 г Т. 2 : Химия. С. 262-264Abstract: The details of sample preparation and sources of impurities in the analysis of carboxylic acids in water are considered. The paper introduces the procedure for determination of trace amounts of straight chain aliphatic carboxylic acids in water by reserved-phase high-performance liquid chromatography. Natural and tap water samples were designated as targets of research. The analytes were pre-purified from contaminates by distillation and then concentrated with a nonspecific polymer sorbent. The maximum degree of extraction of sorb compounds from sorbents is achieved by elution with a solution of Na2CO3 (c=0.16 mg/ml) in 85% aqueous ethanol at a pH of the sample in the acidic range of 3-6. Pre-column derivatization of acids were carried out with 2,4’- dibromoacetophenone (DBAP) that has been hardly mentioned previously regarding the modification of carboxylic acids The detection of the derivates was conducted by absorption in UV light at a wavelength of 260 nm. The detection limit in terms of bromophenacyl ester of palmitic acid (C16:0) achieves not less 0.1 pg /L.
Библиогр.: 3 назв.
The details of sample preparation and sources of impurities in the analysis of carboxylic acids in water are considered. The paper introduces the procedure for determination of trace amounts of straight chain aliphatic carboxylic acids in water by reserved-phase high-performance liquid chromatography. Natural and tap water samples were designated as targets of research. The analytes were pre-purified from contaminates by distillation and then concentrated with a nonspecific polymer sorbent. The maximum degree of extraction of sorb compounds from sorbents is achieved by elution with a solution of Na2CO3 (c=0.16 mg/ml) in 85% aqueous ethanol at a pH of the sample in the acidic range of 3-6. Pre-column derivatization of acids were carried out with 2,4’- dibromoacetophenone (DBAP) that has been hardly mentioned previously regarding the modification of carboxylic acids The detection of the derivates was conducted by absorption in UV light at a wavelength of 260 nm. The detection limit in terms of bromophenacyl ester of palmitic acid (C16:0) achieves not less 0.1 pg /L.
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