zldmЗаводская лаборатория. Диагностика материаловIndustrial laboratory. Diagnostics of materials1028-68612588-0187ООО «Издательство «ТЕСТ-ЗЛ»10.26896/1028-6861-2019-85-7-7-15zldm-1023Research ArticleАНАЛИЗ ВЕЩЕСТВАSUBSTANCES ANALYSISПрямое высокочувствительное определение элементов в бензине, керосине и растворах минеральных масел методом атомно-эмиссионной спектрометрии с индуктивно-связанной плазмойDirect high sensitive determination of elements in gasoline, kerosene, and mineral oil solutions by inductively coupled plasma atomic emission spectrometry (ICP-AES)КоркинаД. А.KorkinaDaria A.

199106, г. Санкт-Петербург, ул. Линия 26-я, 15-2, А

15-2, A, Liniya 26-ya st., St. Petersburg, 199106

ДелятинчукН. Н.DeliatinchukNikolai N.

199106, г. Санкт-Петербург, ул. Линия 26-я, 15-2, А

15-2, A, Liniya 26-ya st., St. Petersburg, 199106

lab@analit-spb.ruГринштейнИ. Л.GrinshteinIlia L.

199106, г. Санкт-Петербург, ул. Линия 26-я, 15-2, А

15-2, A, Liniya 26-ya st., St. Petersburg, 199106

ООО «Аналит Продактс»РоссияLTD Analit ProdaktsRussian Federation201911082019857715Copyright © Коркина Д.А., Делятинчук Н.Н., Гринштейн И.Л., 20192019Коркина Д.А., Делятинчук Н.Н., Гринштейн И.Л.Korkina D.A., Deliatinchuk N.N., Grinshtein I.L.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.zldm.ru/jour/article/view/1023

Прямой анализ нефтепродуктов, органических растворителей и топлив методом атомно-эмиссионной спектрометрии с индуктивно-связанной плазмой зачастую возможен только в режиме радиального обзора плазмы и требует использования специальных систем ввода пробы, конструкция которых существенно зависит от физических свойств пробы, в частности, ее летучести и вязкости. Наиболее проблемными объектами анализа являются легколетучие фракции нефти и соответствующие нефтепродукты (нафта, бензин), а также тяжелые и вязкие фракции и нефтепродукты (вакуумный газойль, мазут, густые смазочные масла). В данной работе рассмотрена возможность прямого анализа проб на основе бензина, керосина и смазочных масел, растворенных в керосине, методом атомно-эмиссионной спектрометрии с индуктивно-связанной плазмой (ИСП-АЭС). Исследованы возможности применения различных конфигураций систем ввода образцов и режимов обзора плазмы вертикально расположенной горелки для прямого анализа проб на основе керосина и бензина. Продемонстрировано значительное улучшение чувствительности определения ряда элементов в бензине и керосине за счет использования аксиального обзора плазмы при оптимальных конфигурациях систем ввода и режимах горения плазмы.

Direct ICP-AES analysis of petroleum products, organic solvents and fuels is oftentimes possible only in the mode of radial plasma viewing and requires the use of special sample injection systems, the design of which depends significantly on the physical properties of the sample, in particular, on its volatility and viscosity. Volatile oil fractions and products (naphtha, gasoline), as well as and heavy and viscous oil fractions of and petroleum products (vacuum gas oil, fuel oil, thick lubricating oils) are the most problematic objects of analysis. We consider the possibility of direct analysis of the samples based on gasoline, kerosene and lubricating oils dissolved in kerosene using inductively coupled plasma atomic emission spectrometry (ICP-AES). The possibility of using various configurations of sample injection systems and modes of plasma viewing of vertically located torch for direct analysis of the samples based on kerosene and gasoline is considered. A significant improvement in the sensitivity of determination of the elements in gasoline and kerosene using an axial plasma viewing combined with optimal configurations of sample introduction systems and plasma burning modes is demonstrated.

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The authors declare that there are no conflicts of interest present.