Актуальные методические решения в атомно-абсорбционном анализе с источником непрерывного спектра

В данном обзоре освещены современные направления применения метода атомно-абсорбционной спектрометрии с источником непрерывного спектра (ААС-ИНС) для количественного анализа. Рассмотрены подходы к анализу образцов различного состава: объектов окружающей среды, пищевых продуктов, растительных и биологических материалов, металлосодержащих образцов, нефти и нефтепродуктов, косметических средств. Приведены методические решения (применение различных модификаторов, оптимизация программ нагрева графитовой печи, проведение предварительного концентрирования) для достижения низких пределов обнаружения и определения. Отмечено различие между одновременным многоэлементным определением и последовательным определением из одной аликвоты. Представлен анализ нормативной базы по действующим стандартам с использованием метода ААС-ИНС и аттестованным методикам, включенным в Федеральный информационный фонд по обеспечению единства измерений. Обзор демонстрирует, что ААС-ИНС с электротермической атомизацией является высокочувствительным, точным и экономически эффективным аналитическим инструментом, и его дальнейшее развитие связано с разработкой многоэлементных методик анализа объектов сложного состава.

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