D. Helmig, J. López-Cancio, J. Arey
Nov 1, 1992
Citations
0
Influential Citations
49
Citations
Journal
Environmental Science & Technology
Abstract
2- and 4-nitro-6H-dibenzo[b,d]pyran-6-ones were quantified in ambient air samples collected in southern California and in the NIST SRM 1649 urban dust collected in Washington, DC. Lower concentrations of these nitrodibenzopyranones were observed in the NIST SRM 1650 diesel particulate material, and comparison of the concentrations of nitrodibenzopyranones, nitropyrenes, and nitrofluoranthenes in the SRMs 1649 and 1650 support the conclusion that the nitrodibenzopyranones are formed in the atmosphere