Study of gaseous sample ionization by excited particles formed in glow discharge using high resolution orthogonal acceleration time-of-flight mass spectrometer

T13N4

I.V. Sulimenkov, V.S. Brusov, V.V. Zelenov, M.G. Skoblin, V.V. Filatov,
A.R. Pikhtelev, V.I. Kozlovskii

The experimental results of mass spectral analysis of volatile organic compounds in gaseous sample using a new designed of the ion source with Penning ionization by excited metastable atoms of noble gas are presented. To analyze gas flow profile effect on the metastable atom transfer and the reaction efficiency, gas dynamic simulation of the reagent gas flow profile from the discharge zone to the ionization region was performed by ANSYS software. The n-octane and toluene samples diluted with helium at 100 ppb mole concentration were used for our experiments. The resulting mass spectra of n-octane and toluene samples contain far more intensive molecular ions in comparison to the n-octane and toluene electron ionization mass spectra from NIST database. The sensitivity of 5 ions per 1 pg and 130 ions per 1 pg was achieved for n-octane and toluene molecular ions using the developed ion source combined with our mass spectrometer. The corresponding detection limits are 2.3 pg s−1 and 0.08 pg s−1 for n-octane and toluene molecular ions. The detection limit for the reported ion source was considered theoretically.

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Возможности метода микроэкстракции шприцем

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Возможности системы высокоскоростной газовой хроматографии

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Определение азота в сталях

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Новый подход к реализации спектрометра ионной подвижности/масс-спектрометра

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Определение содержания элементов и их изотопного состава в сухих остатках растворов

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Времяпролетная масс-спектрометрия с матрично- активированной лазерной десорбцией/ионизацией

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Эффективная ионизация элементов с высокими энергиями ионизации

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Простая модель кулоновского взаимодействия

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