Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
GCMS chromatograms of carbonyl-specific analysis of A) fresh (morning) and B) aged (night) SynUrb54. Several peaks representing specific carbonyl compounds have been identified in the aged sample. Chromatograms shown are from exposures conducted in week 1. Similar chromatograms were obtained for week 2.
