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Идентификация метил-трет-бутилового эфира в крови человека хромато-масс-спектрометрическим методом

Идентификация метил-трет-бутилового эфира в крови человека хромато-масс-спектрометрическим методом

Abstract

Рассматривается применение хромато-масс-спектрометрии для достоверной идентификации и изучения фрагментации ионизированных молекул метил-трет-бутилового эфира в крови человека. На основании регистрации масс-спектра ионов метил-трет-бутилового эфира определена структура, молекулярная масса, элементный состав молекулы метил-трет-бутилового эфира. Установлены характеристические ионы (основной и подтверждающие ионы) и определено хроматографическое время удерживания. В процессе выполнения идентификации метил-трет-бутилового эфира в образце крови на масс-спектрограмме установлен пик, который является результатом взаимного наложения нескольких индивидуальных соединений-изомеров с совпадающими временами удерживания: 2-метилпентан, метилтретбутиловый эфир и 3-метил-пентан. Для оптимального разделения идентифицированных изомеров в процессе исследований обосновано использование двух последовательно соединенных капиллярных колонок различной полярности.

This article details the applying of GC-MS for accurate identification and study the fragmentation of ionized molecules of methyl tert-butyl ether in human blood. Basing on the reception of mass spectrum of ions of methyl tert-butyl ether the structure, molecular weight, elemental composition of a molecule of methyl tert-butyl ether are defined. The characteristic ions (primary and confirming ions) of methyl tert-butyl ether are detected and the chromatographic retention time is determined. In the process of performing of identification of methyl tret-butyl ether in a blood sample on the mass spectrogram the peak is set which is the result of overlap of several individual peaks of the compounds-isomers with the identical retention times: 2methylpentane, methyl tert-butyl ether and 3-methyl pentane. To eliminate low resolution in the studies two consecutive capillary columns were used.

Keywords

МЕТИЛ-ТРЕТ-БУТИЛОВЫЙ ЭФИР,METHYL TERT-BUTYL ETHER,ХРОМАТО-МАСС-СПЕКТРОМЕТРИЧЕСКИЙ МЕТОД,CHROMATOGRAPHIC-MASS-SPECTROMETRIC METHOD,ХАРАКТЕРИСТИЧЕСКИЕ ИОНЫ,CHARACTERISTIC IONS,МАСС-СПЕКТР,MASS-SPECTRUM,МАСС-СЕЛЕКТИВНЫЙ ДЕТЕКТОР,MASS-SELECTIVE DETECTOR

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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