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Разработка методов определения органических соединений (оксид этилена, 1,3-бутадиен, акрилонитрил) в атмосферном воздухе на уровне референтных концентраций

Разработка методов определения органических соединений (оксид этилена, 1,3-бутадиен, акрилонитрил) в атмосферном воздухе на уровне референтных концентраций

Abstract

The results of experimental studies on the development of gas chromatographic methods for the determination of 1,3-butadiene and ethylene oxide, acrylonitrile in ambient air at the reference levels – by adsorbing the studied compounds from ambient air onto a Tenax TA sorbent and using optimum thermal desorption and capillary gas chromatographic conditions are presented in this article. The adsorption, thermal desorption and gas chromatographic parameters of the determination of 1,3-butadiene and ethylene oxide, acrylonitrile in ambient air were justified. We have achieved a high sensitivity of the gas chromatographic determination of the studied compounds at the reference levels (mg/m 3) was achieved: 1,3-butadiene – 0.002, ethylene oxide – 0.005, acrylonitrile – 0.002 with an error of determination to within 25 %.

Приведены результаты экспериментальных исследований по разработке газохроматографических методов определения 1,3-бутадиена и оксид этилена, акрилонитрила в атмосферном воздухе на уровне референтных концентраций путем сорбции изучаемых соединений из атмосферного воздуха на сорбент Tenax ТА в сочетании с оптимальными условиями термодесорбции и применением капиллярной газовой хроматографии. Обоснованы параметры сорбции, термодесорбции и газохроматографического определения 1,3-бутадиена и этилена оксида, акрилонитрила в атмосферном воздухе. Достигнута высокая чувствительность газохроматографического определения изучаемых соединений на уровне референтных концентраций (мг/м 3): 1,3-бутадиен – 0,002, оксид этилена – 0,005, акрилонитрил – 0,002 при погрешности методов определения не более 25 %.

Keywords

РЕФЕРЕНТНЫЕ КОНЦЕНТРАЦИИ (RFC), 3-БУТАДИЕН, ОКСИД ЭТИЛЕНА, КАПИЛЛЯРНАЯ ГАЗОВАЯ ХРОМАТОГРАФИЯ, ДЕТЕКТОР ИОНИЗАЦИИ В ПЛАМЕНИ, ТЕРМОИОННЫЙ ДЕТЕКТОР, ТЕРМОДЕСОРБЦИЯ, ВНУТРЕННИЙ КОНТРОЛЬ КАЧЕСТВА, КОЛИЧЕСТВЕННЫЙ ХИМИЧЕСКИЙ АНАЛИЗ, REFERENCE CONCENTRATION (RFC)

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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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