Изображение на обложке

Разработка методики измерений физических параметров наночастиц, содержащихся в воде, на анализаторе IG-1000 Plus

T. N. Shtin, V. B. Gurvich, E. V. Kostromina, I. A. Khlystov, S. A. Shtin

Аннотация


Предложена методика определения физических параметров наночастиц в воде методом индуцированной решетки с их предварительным гранулометрическим разделением. Рекомендованы способы подготовки проб воды. Наночастицы микрофлоры идентифицированы после термической обработки пробы воды в микроволновой системе подготовки проб. В магнитном поле отделены диамагнитные наночастицы в воде. По результатам определения Fe и Ni методом масс-спектрометрии установлено хорошее отделение ферромагнитных частиц в магнитном поле. Экстрагированы гексаном из воды твёрдые полимерные материалы. Установлено селективное извлечение частиц полистирола из водных растворов. Физические параметры частиц измерены на анализаторе размеров частиц IG-1000 Plus (Shimadzu, Япония). Оптимизированы параметры измерения. Разработанная методика применена для установления формы, состава, числа, площади поверхности, коэффициента диффузии и дзета-потенциала частиц, массовой концентрации элементов в воде природной и питьевой. Методика внесена в единый реестр аттестованных методик на территории РФ (ФР.1.31.2025.52154). Анализ гранулометрического состава взвешенных частиц в воде может быть использован для валидации методов очистки воды на станциях водоподготовки и оценки влияния частиц на возможные токсические эффекты после их поступления в организм

Ключевые слова: вода, наночастицы, пластик, микрофлора, диамагнетики, удельная площадь поверхности, коэффициент диффузии, дзета-потенциал


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Литература


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DOI: https://doi.org/10.15826/analitika.2025.29.4.002

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