Navajo Coal Combustion and Respiratory Health Near Shiprock, New Mexico

Table 5

Semiquantitative results of polycyclic aromatic hydrocarbon (PAH) concentration (ng/m³) in 24-hour PM_2.5 air samples.

	NAV78 winter indoor	NAV151 winter indoor	NAV78 winter outdoor	NAV151 winter outdoor	NAV151 summer indoor
1 methylnaphthalene	1.378	1.803	1.105	1.721	0.988
1 methylphenanthrene	0.000	0.000	0.873	3.588	0.000
2 methylnaphthalene	0.747	0.936	1.017	0.929	0.591
2,3,5-trimethylnaphthalene	0.000	0.000	0.000	0.000	0.000
2,6-dimethylnaphthalene	0.344	0.000	0.430	0.000	0.000
3,6-dimethylphenanthrene	0.000	0.000	0.000	0.565	0.000
acenaphthene	0.000	0.000	0.000	0.000	0.000
acenaphthylene	0.000	0.000	0.000	1.345	0.000
anthracene	0.000	0.071	0.000	1.773	0.000
benzo[a]anthracene	4.346	3.760	5.040	28.968	0.000
benzo[a]pyrene	5.223	21.813	4.693	26.504	3.443
benzo[b] fluoranthene	22.654	31.709	8.021	42.211	9.562
benzo[e]pyrene	14.312	33.987	5.694	24.674	14.396
benzo[ghi]perylene	19.706	116.106	5.684	25.986	81.793
benzo[k] fluoranthene	22.500	32.723	8.782	41.669	7.067
biphenyl	0.000	0.762	0.337	0.000	0.000
chrysene	8.829	5.676	7.505	39.672	0.000
dibenzo[ah]anthracene	5.078	8.737	6.757	7.699	0.000
dibenzothiophene	0.000	0.000	0.000	0.000	0.000
fluoranthene	2.818	4.494	3.746	23.894	1.444
fluorene	0.283	0.000	0.000	0.699	0.000
indeno[123cd]pyrene	27.720	81.681	7.143	36.943	38.791
naphthalene	2.322	4.399	1.395	2.851	2.010
perylene	0.000	5.377	2.926	7.058	0.000
phenanthrene	2.860	5.068	2.749	12.368	0.000
pyrene	1.667	5.681	4.004	25.749	1.713
total ng	142.786	364.781	77.902	356.866	161.797
average ng	5.492	14.030	2.996	13.726	6.223
avg ng/m^3	0.171	0.436	0.093	0.427	0.193