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. Author manuscript; available in PMC: 2014 Nov 21.
Published in final edited form as: J Expo Sci Environ Epidemiol. 2009 Oct 28;20(5):446–456. doi: 10.1038/jes.2009.34

Table 1.

CMB source apportionment of total organic carbon and elemental carbon concentrations determined via the non-polar TD-GCMS method for one high and one low elemental carbon day in the South Bronx

Low EC Day
(10/22/04)
(EC = 2.1 μg/m3)
(PM2.5= 9.1 μg/m3 )		 High EC Day
(10/29/04)
EC = 6.1 μg/m3)
(PM2.5= 21.6 μg/m3)
Percent OC Contribution (Uncertainty) Percent EC Contribution (Uncertainty) Percent OC Contribution (Uncertainty) Percent EC Contribution (Uncertainty)
Biogenic Burning 2.6 (0.4) 0.06 (0.01) 0.7 (0.1) 0.02 (0.004)
Diesel Vehicles 53.9 (11.9) 92.6 (20.4) 30.9 (6.1) 93.5 (18.6)
Gasoline Vehicles 38.2 (4.7) 7.36 (0.91) 15.3 (2.2) 5.2 (0.8)
“Smoker” Cars 5.2 (5.2) 0.07 (0.07) 53.0 (5.8) 1.2 (0.1)