Sensitivity Increase in Headspace Analysis of Hydrocarbons in Water by Using Online Selective Elimination of Gas Extractant

Oleg V. Rodinkov, Alexey Y. Pisarev, Leonid N. Moskvin, Aleksandra S. Bugaichenko, Pavel N. Nesterenko

Результат исследований: Научные публикации в периодических изданияхстатьярецензирование

1 Цитирования (Scopus)

Аннотация

In this study, a novel approach in headspace gas chromatographic analysis using the selective absorption of the gas extractant during concentration of the analytes was developed. The carbon dioxide used as the gas extractant was removed from the sample flow by passing it through a column packed with microdispersed sodium hydroxide granules. The analytical capabilities of the suggested method were illustrated by the determination of aliphatic and aromatic hydrocarbons in water. We established that this method allows the preconcentration of analytes in the gas phase to be increased proportionally to the volume ratios of the gas extractant before and after absorption, while the analyte limits of detection decrease 30-fold. For example, benzene can be detected in water at a concentration of 0.5 µg/L.

Язык оригиналаанглийский
Номер статьи15
Число страниц10
ЖурналSeparations
Том9
Номер выпуска1
DOI
СостояниеОпубликовано - 14 янв 2022

Предметные области Scopus

  • Аналитическая химия
  • Фильтрация и сепарация

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