TABLE 6.

Concentration (mean ± SD) of nitrated-PAHs in standard reference materials and urban air samples (Bamford et al., 2003)

	Urban air particulate concentration (ng/g)			Diesel exhaust particulate concentration (ng/g)
Nitrated PAH	SRM 1648	SRM 1649a	PM2.5 (Baltimore)	SRM 2975	SRM 1975	SRM 1650a
1-Nitronaphthalene	9.3±0.4	6.8±0.3	8.2±0.3	42.1±2.7	13.6±0.5	86.4±2.3
2-Nitronaphthalene	7.9±0.4	10.0±0.5	7.1±0.2	124±4	37.1±0.9	238±3
2-Nitrobiphenyl	<5	<5	<5	<7	<7	15.3±3.7
3-Nitrobiphenyl	4.4±0.1	3.6±0.5	2.5±0.3	<7	<7	58.1±1.6
5-Nitroacenaphthene	3.6±0.4	3.1±0.3	1.7±0.2	<10	<10	37.0±2.9
2-Nitrofluorene	<2	<2	<2	<2	<2	46.2±2.6
9-Nitroanthracene	134±9	359±0.6	123±5	2928±63	1284±16	6080±190
9-Nitrophenanthrene	2.8±0.2	1.7±0.1	8.9±0.5	454±20	205±5	510±9
4-Nitrophenanthrene	1.0±0.2	0.47± 0.03	0.59±0.03	25.4±1.0	10.8±1.4	150±4
3-Nitrophenanthrene	23.7±2.3	22.0±0.6	16.0±0.4	189±15	80.3±4.1	4350±230
1-Nitrofluoranthene	<2	<2	<2	133±10	48.4±6.3	274±12
7-Nitrofluoranthene	<2	<2	<2	<2	<2	<2
2-Nitrofluoranthene	246±10	282±31	339±17	188±8	71±3	201±12
3-Nitrofluoranthene	6.4±1.5	4.5±1.8	2.6±0.3	4301±330	1624±22	65.2±7.4
4-Nitropyrene	9.1±0.7	5.5±0.6	8.8±1.2	173±11	68.2±2.4	135±8
8-Nitrofluoranthene	13.0±2.1	8.8±1.4	5.6±0.6	656±46	220±6	106±17
1-Nitropyrene	155±29	71.5±5.1	196±3	39, 640±1700	16, 070±590	18, 330±340
2-Nitropyrene	48.9±2.4	24.4±4.0	35.5±5.8	<4	<4	<4
7-Nitrobenz[a]anthracene	43.0±4.3	351±3.6	351±2.9	5300±380	1962±70	995±68
6-Nitrochrysene	6.9±0.6	4.4±0.2	2.0±0.2	2368±70	900±15	44.4±3.4
6-Nitrobenzo[a]pyrene	61.0±8.7	<40	309±37	1650±35	514±24	1442±47
l-Nitrobenzo[e]pyrene	<7	<7	<7	1788±45	670±17	<10
3-Nitrobenzo[e]pyrene	<5	<5	<5	6857±210	1825±71	89±19
1-Nitrobenzo[a]pyrene	<5	<5	<5	<5	<5	<5
3-Nitrobenzo[a]pyrene	<5	<5	<5	<5	<5	<5
1,3-Dinltropyrene	<2	<2	<2	1146±60	538±40	44 : 4±8 : 5
1,6-Dinitropyrene	<4	<4	<4	2543±220	934±14	84 : 5±6 : 2
1,8-Dinitropyrene	<2	<2	<2	3580±160	1377±43	<9

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