DOI

Abstract: A scheme is proposed for the rapid dynamic sorption preconcentration of volatile organic compounds in the gas chromatographic analysis of air, based on a change in the configuration of the sorption layer in a transition from the sorption to the thermal desorption of analytes. The sorption extraction of analytes is carried out in a wide sorption column, which ensures high flow rates of the analyzed air at relatively small pressure drops created by typical electric aspirators. Then the sorbent is poured into a narrow column, which ensures rapid heating and the minimal blurring of analyte zones in the thermal desorption. The analytical capabilities of the proposed scheme, which makes it possible to reduce the duration of the stage of the sorption preconcentration of analytes by a factor of 3–4, is illustrated on an example of the sorption preconcentration of methanol and phenol using carboxene 1000 and carbopak C, respectively.

Переведенное названиеСорбционное концентрирование летучих органических соединений в анализе воздуха с изменением конфигурации сорбционного слоя при переходе от сорбции к десорбции
Язык оригиналаанглийский
Страницы (с-по)707-713
Число страниц7
ЖурналJournal of Analytical Chemistry
Том76
Номер выпуска6
DOI
СостояниеОпубликовано - 1 июн 2021

    Предметные области Scopus

  • Химия (все)
  • Аналитическая химия

ID: 77772794