TABLE 4.

Quinones adsorbed to PM isolated from different sources (Mirivel et al., 2010)

	Particulate concentration (µg/g)
Quinone	Diesel particulate	Kerosene soot	Urban particulate reference material SRM 1648a	Indoor dust reference material SRM 2584	Vehicle exhaust reference material NIES No. 8	Urban dust reference material SRM 1649a
9,10-Anthraquinone	37.5	39.3	3.2	1.7	14.1	2.4
9,10-Phenanthroquinone	26.1	< 1.6	0.5	< 0.1	11.4	1.1
2-Methyl-9,10-anthraquinone	30.3	< 4.5	1.4	0.5	4.1	1.0
1,2-Benzofluorenone	4.8	11.7	2.5	0.9	1.5	2.0
benzanthrone	8.7	227.2	4.5	0.6	1.9	4.6
5,6-Chrysenequinone	< 10.4	< 39.9	< 2.5	< 2.3	< 1.5	< 3.7
2-Fluorenecarboxaldehyde	< 6.3	1,128.1	< 1.5	< 1.4	< 0.9	< 2.3
1,2-Benzanthraquinone	< 4.0	< 15.4	3.3	1.6)	< 0.6	3.4
5,12-Naphthacenequinone	< 29.3	< 112.9	< 7.0	< 6.5	< 4.2	< 10.5

Bold type highlights those substances that are potentially useful biomarkers of diesel exhaust exposure.