Table 9.

PAH and nitro-PAH average emissions for all 12 repeats of the 16-hr cycles for all four 2007 ACES engines and all three 2010 engines, and for 2000-technology engine running over the FTP transient cycle

PAH and nitroPAH compounds	a,b2000-Technology engines, mg/bhp-hr	a2007-Technology engines, mg/bhp-hr	a2010-Technology engines, mg/bhp-hr	aPercent reduction relative to 2000 technology engines	aPercent reduction relative to 2007 technology engines
Naphthalene	0.4829	0.0982000 ± 0.0423000	0.0019050 ± 0.0013350	>99	98
Acenaphthylene	0.0524	0.0005000 ± 0.0005000	0.0000397 ± 0.0000413	>99	92
Acenaphthene	0.0215	0.0004000 ± 0.0001000	0.0000529 ± 0.0000349	>99	87
Fluorene	0.0425	0.0015000 ± 0.0009000	0.0001217 ± 0.0000637	>99	92
Phenanthrene	0.0500	0.0077000 ± 0.0025000	0.0004535 ± 0.0001218	99	94
Anthracene	0.0121	0.0003000 ± 0.0001000	0.0000207 ± 0.0000150	100	93
Fluoranthene	0.0041	0.0006000 ± 0.0006000	0.0000339 ± 0.0000053	99	94
Pyrene	0.0101	0.0005000 ± 0.000400	0.0000233 ± 0.0000078	>99	95
Benz[a]anthracene	0.0004	0.0000071 ± 0.0000055	0.0000030 ± 0.0000027	99	58
Chrysene	0.0004	<0.0000001	<0.0000001	>99	c
Benzo[b + j + k]fluoranthene	<0.0003	.0000170 ± .0000151	0.0000004 ± 0.0000003	>99	98
Dibenzo[a,e]pyrene	<0.0003	0.0000022 ± 0.0000018	<0.0000001	>99	>95
Perylene	<0.0003	0.0000055 ± 0.0000068	<0.0000001	>99	>98
Indeno[123-cd]pyrene	<0.0003	0.0000027 ± 0.0000015	<0.0000001	>99	>96
Dibenz[ah + ac]anthracene	<0.0003	0.0000031 ± 0.0000021	<0.0000001	>99	>97
Benzo[ghi]perylene	<0.0003	0.0000046 ± 0.0000013	0.0000002 ± 0.0000001	>99	96
2- Nitrofluorene	0.0000650	0.00000360 ± 0.00000410	<0.00000001	>99	>97
9-Nitroanthracene	0.0007817	0.0000148 ± 0.0000213	0.00000050 ± 0.0000002	>99	97
2-Nitroanthracene	0.0000067	0.00000040 ± 0.00000090	<0.00000001	98	>75
9-Nitrophenanthrene	0.0001945	0.00002110 ± 0.00002090	0.00000020 ± 0.0000002	>99	99
4-Nitropyrene	0.0000216	<0.0000001	<0.00000001	>99	c
1-Nitropyrene	0.0006318	0.0000197 ± 0.0000243	<0.00000001	>99	>99
7-Nitrobenz[a]anthracene	0.0000152	0.00000020 ± 0.00000020	<0.00000001	>99	>50
6-Nitrochrysene	0.0000023	<0.0000001	<0.00000001	>96	c
6-Nitrobenzo[a]pyrene	0.0000038	<0.0000001	<0.00000001	>97	c

Notes: ^aThe significant figures signify the detection limit in mg/bhp-hr.

^bStandard deviation data were not reported.

^c Both values are below detection with similar resolution.