Ultratrace Determination of Vapor-Phase Nitrogen Heterocyclic Bases in Ambient Air

Jeanette Adams, Elliot L. Atlas, Choo Seng Glam

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Methods have been developed to sample and quantitate vapor- phase nitrogen heterocyclic bases In ambient air. A hlgh-volume sampling procedure which employs Florlsll as an adsorbent Is used to trap azaarenes. The analytical procedure provides simple and reproducible determinations of trace levels of the two- and three-ringed nitrogen-containing compounds. The procedure Involves carefully controlled evaporative concentration oil eluates from Florlsll and a “mini” acid-base extraction. The data obtained from the analysis of ambient air Indicate that vapor-phase levels of azaarenes are many times higher than those previously reported based only on particulate matter. Thus, reports which did not measure vapor-phase concentrations have significantly under- measured the total concentrations of atmospheric nitrogen heterocycles.

Original languageEnglish (US)
Pages (from-to)1515-1518
Number of pages4
JournalAnalytical Chemistry
Volume54
Issue number9
DOIs
StatePublished - Aug 1982
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry

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