ОБОБЩЕННЫЕ КРИТЕРИИ ВЫБОРА УСЛОВИЙ АНАЛИЗА В МАСС-СПЕКТРОМЕТРИИ DART

G. A. Kalabin, E. S. Chernetsova

Аннотация


Проведено сопоставление результатов исследования состава и интенсивностей сигналов в масс-спектрах DART органических соединений при использовании нескольких типов масс-анализаторов и конфигураций вакуумного интерфейса между источником ионов и входом в масс-анализатор. На примере различных соединений установлена зависимость состава масс-спектров DART, полученных с использованием разных масс-анализаторов и условий эксперимента. Обсуждается роль состава и скорости потока газа-носителя, давления в вакуумном интерфейсе, температуры и состава атмосферы в области ионизации, присутствия добавки неона в гелии, параметров керамической трубки вакуумного интерфейса, напряжения на входе в масс-анализатор. Впервые сформулированы обобщенные рекомендации и критерии выбора условий регистрации масс-спектров DART в зависимости от аналитов, условий эксперимента, используемой технической базы.

Ключевые слова: масс-спектрометрия, прямой анализ в режиме реального времени, DART, оптимизация, критерии, условия эксперимента

DOI: http://dx.doi.org/10.15826/analitika.2014.18.3.002

 


Полный текст:

PDF (Russian)

Литература


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